2.4.0.8407020 - Disclosure - Securitizations and Variable Interest Entities, Significant Continuing Involvement - Unconsolidated VIEs (Details)truefalseIn Millions, unless otherwise specifiedfalse1falseUSDfalsefalse$AS_OF_Jun30_2013http://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falseUSDfalsefalse$AS_OF_Dec31_2012http://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse15721660000001572166USD$falsetruefalse2truefalsefalse15538240000001553824USD$falsetruefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false23false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse04true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse05false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse12929180000001292918USD$falsefalsefalse2truefalsefalse12684940000001268494USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false26false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse5falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse07true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse08false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4336900000043369USD$falsefalsefalse2truefalsefalse4979400000049794USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false29false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse7falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse010true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse011false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse170679000000170679USD$falsefalsefalse2truefalsefalse168126000000168126USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false212false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse9falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse013true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse014false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse70840000007084USD$falsefalsefalse2truefalsefalse69400000006940USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false215false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse11falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse016true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse017false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse80890000008089USD$falsefalsefalse2truefalsefalse81550000008155USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false218false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse13falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse019true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse020false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1064000000010640USD$falsefalsefalse2truefalsefalse1040400000010404USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false221false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse15falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse022true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse023false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2052400000020524USD$falsefalsefalse2truefalsefalse2009800000020098USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false224false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse17falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse025true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse026false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse57190000005719USD$falsefalsefalse2truefalsefalse66410000006641USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false227false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse19falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse028true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse029false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse38010000003801USD$falsefalsefalse2truefalsefalse47710000004771USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false230false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse21falseUSDtruefalse$AS_OF_Jun30_2013_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse031true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse032false4wfc_VariableInterestEntityNonconsolidatedAssetswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse93430000009343USD$falsefalsefalse2truefalsefalse1040100000010401USD$falsefalsefalsexbrli:monetaryItemTypemonetarySize of the Variable Interest Entity (VIE) presented as total assets.No definition available.false233false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse23falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse034true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse035false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3474600000034746USD$falsefalsefalse2truefalsefalse3566400000035664USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false236false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3474600000034746USD$falsefalsefalse2truefalsefalse3566400000035664USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false237false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse25falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse038true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse039false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse37910000003791USD$falsefalsefalse2truefalsefalse36200000003620USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false240false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse37910000003791USD$falsefalsefalse2truefalsefalse36200000003620USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false241false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse27falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse042true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse043false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse17090000001709USD$falsefalsefalse2truefalsefalse21880000002188USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false244false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse17090000001709USD$falsefalsefalse2truefalsefalse21880000002188USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false245false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse29falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse046true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse047false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse75260000007526USD$falsefalsefalse2truefalsefalse70810000007081USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false248false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse75260000007526USD$falsefalsefalse2truefalsefalse70810000007081USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false249false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse31falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse050true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse051false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3600000036USD$falsefalsefalse2truefalsefalse1300000013USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false252false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3600000036USD$falsefalsefalse2truefalsefalse1300000013USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false253false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse33falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse054true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse055false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse77330000007733USD$falsefalsefalse2truefalsefalse79620000007962USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false256false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse77330000007733USD$falsefalsefalse2truefalsefalse79620000007962USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false257false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse35falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse058true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse059false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse66060000006606USD$falsefalsefalse2truefalsefalse71550000007155USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false260false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse66060000006606USD$falsefalsefalse2truefalsefalse71550000007155USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false261false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse37falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse062true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse063false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse52000000005200USD$falsefalsefalse2truefalsefalse51800000005180USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false264false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse52000000005200USD$falsefalsefalse2truefalsefalse51800000005180USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false265false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse39falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse066true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse067false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10890000001089USD$falsefalsefalse2truefalsefalse14390000001439USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false268false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10890000001089USD$falsefalsefalse2truefalsefalse14390000001439USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false269false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse41falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse070true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse071false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5000000050USD$falsefalsefalse2truefalsefalse4900000049USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false272false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5000000050USD$falsefalsefalse2truefalsefalse4900000049USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false273false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse43falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_DebtAndEquityInterestsMember_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDebt and equity interests [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DebtAndEquityInterestsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse074true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse075false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10060000001006USD$falsefalsefalse2truefalsefalse977000000977USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false276false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10060000001006USD$falsefalsefalse2truefalsefalse977000000977USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false277false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse45falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse078true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse079false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1371400000013714USD$falsefalsefalse2truefalsefalse1111400000011114USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false280false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1371400000013714USD$falsefalsefalse2truefalsefalse1111400000011114USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false281false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse47falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse082true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse083false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1302200000013022USD$falsefalsefalse2truefalsefalse1033600000010336USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false284false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1302200000013022USD$falsefalsefalse2truefalsefalse1033600000010336USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false285false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse49falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse086true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse087false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse272000000272USD$falsefalsefalse2truefalsefalse284000000284USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false288false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse272000000272USD$falsefalsefalse2truefalsefalse284000000284USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false289false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse51falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse090true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse091false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse395000000395USD$falsefalsefalse2truefalsefalse466000000466USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false292false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse395000000395USD$falsefalsefalse2truefalsefalse466000000466USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false293false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse53falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse094true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse095false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false296false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false297false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse55falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse098true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse099false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2100false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2101false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse57falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0102true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0103false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2104false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2105false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse59falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0106true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0107false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2108false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2109false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse61falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0110true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0111false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2112false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2113false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse63falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0114true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0115false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2116false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2117false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse65falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ServicingAssetsMember_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseServicing assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ServicingAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0118true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0119false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2500000025USD$falsefalsefalse2truefalsefalse2800000028USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2120false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2500000025USD$falsefalsefalse2truefalsefalse2800000028USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2121false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse67falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0122true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0123false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse589000000589USD$falsefalsefalse2truefalsefalse786000000786USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2124false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10280000001028USD$falsefalsefalse2truefalsefalse13400000001340USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2125false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse69falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0126true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0127false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-8000000-8USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2128false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse80000008USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2129false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse71falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0130true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0131false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2132false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2133false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse73falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0134true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0135false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse287000000287USD$falsefalsefalse2truefalsefalse404000000404USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2136false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse340000000340USD$falsefalsefalse2truefalsefalse446000000446USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2137false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse75falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0138true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0139false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse397000000397USD$falsefalsefalse2truefalsefalse471000000471USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2140false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse397000000397USD$falsefalsefalse2truefalsefalse471000000471USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2141false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse77falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0142true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0143false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2144false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2145false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse79falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0146true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0147false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-91000000-91USD$falsefalsefalse2truefalsefalse-104000000-104USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2148false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse9100000091USD$falsefalsefalse2truefalsefalse104000000104USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2149false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse81falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0150true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0151false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2152false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2153false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse83falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0154true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0155false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse10000001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2156false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse10000001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2157false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse85falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0158true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0159false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2160false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2161false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse87falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_VariableInterestEntityDerivativesMember_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVariable Interest Entity Derivatives [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_VariableInterestEntityDerivativesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0162true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0163false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse40000004USD$falsefalsefalse2truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2164false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse192000000192USD$falsefalsefalse2truefalsefalse318000000318USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2165false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse89falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0166true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0167false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-3763000000-3763USD$falsefalsefalse2truefalsefalse-3255000000-3255USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2168false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse90050000009005USD$falsefalsefalse2truefalsefalse81790000008179USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2169false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse91falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0170true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0171false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-1918000000-1918USD$falsefalsefalse2truefalsefalse-1690000000-1690USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2172false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse56830000005683USD$falsefalsefalse2truefalsefalse50610000005061USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2173false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse93falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0174true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0175false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-41000000-41USD$falsefalsefalse2truefalsefalse-53000000-53USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2176false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse363000000363USD$falsefalsefalse2truefalsefalse353000000353USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2177false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse95falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0178true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0179false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2180false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2181false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse97falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0182true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0183false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-130000000-130USD$falsefalsefalse2truefalsefalse144000000144USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2184false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse130000000130USD$falsefalsefalse2truefalsefalse144000000144USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2185false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse99falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0186true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0187false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2188false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2189false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse101falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0190true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0191false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2192false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse20050000002005USD$falsefalsefalse2truefalsefalse19670000001967USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2193false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse103falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0194true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0195false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-1485000000-1485USD$falsefalsefalse2truefalsefalse-1657000000-1657USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2196false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse432000000432USD$falsefalsefalse2truefalsefalse247000000247USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2197false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse105falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0198true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0199false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2200false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse158000000158USD$falsefalsefalse2truefalsefalse261000000261USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2201false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse107falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0202true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0203false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2204false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4300000043USD$falsefalsefalse2truefalsefalse2700000027USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2205false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse109falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_OtherCommitmentsAndGuaranteesMember_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther commitments and guarantees [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherCommitmentsAndGuaranteesMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0206true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0207false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-189000000-189USD$falsefalsefalse2truefalsefalse10000001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2208false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse191000000191USD$falsefalsefalse2truefalsefalse119000000119USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2209false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse111falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0210true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0211false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4528600000045286USD$falsefalsefalse2truefalsefalse4430900000044309USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2212false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse113falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0213true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0214false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1488700000014887USD$falsefalsefalse2truefalsefalse1226600000012266USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2215false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse115falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0216true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0217false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse19400000001940USD$falsefalsefalse2truefalsefalse24190000002419USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2218false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse117falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0219true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0220false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse82080000008208USD$falsefalsefalse2truefalsefalse79510000007951USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2221false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse119falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0222true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0223false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse303000000303USD$falsefalsefalse2truefalsefalse628000000628USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2224false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse121falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0225true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0226false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse77330000007733USD$falsefalsefalse2truefalsefalse79620000007962USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2227false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse123falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0228true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0229false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse65150000006515USD$falsefalsefalse2truefalsefalse70510000007051USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2230false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse125falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0231true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0232false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse37150000003715USD$falsefalsefalse2truefalsefalse35230000003523USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2233false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse127falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0234true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0235false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10890000001089USD$falsefalsefalse2truefalsefalse14400000001440USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2236false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse129falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0237true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0238false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5000000050USD$falsefalsefalse2truefalsefalse4900000049USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2239false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse131falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_NetAssetsMember_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNet assets [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NetAssetsMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0240true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0241false4us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse846000000846USD$falsefalsefalse2truefalsefalse10200000001020USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false2242false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse133falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0243true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0244false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5849300000058493USD$falsefalsefalse2truefalsefalse5629700000056297USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2245false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse135falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_ConformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseConforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ConformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0246true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0247false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2250400000022504USD$falsefalsefalse2truefalsefalse1901700000019017USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2248false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse137falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_NonconformingResidentialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther/Nonconforming Residential Mortgage Backed Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_NonconformingResidentialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0249true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0250false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse23440000002344USD$falsefalsefalse2truefalsefalse28250000002825USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2251false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse139falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCommercial mortgage securitizations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0252true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0253false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse82610000008261USD$falsefalsefalse2truefalsefalse79930000007993USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2254false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse141falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsDebtSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Debt Securities [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsDebtSecuritiesMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0255true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0256false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse563000000563USD$falsefalsefalse2truefalsefalse628000000628USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2257false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse143falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedDebtObligationsLoansMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized Debt Obligations Loans [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CollateralizedDebtObligationsLoansMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0258true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0259false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse77330000007733USD$falsefalsefalse2truefalsefalse79620000007962USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2260false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse145falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_StructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseAsset-based finance structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0261true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0262false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse87020000008702USD$falsefalsefalse2truefalsefalse92260000009226USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2263false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse147falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_TaxCreditStructuredFinanceMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseTax Credit Structures [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TaxCreditStructuredFinanceMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0264true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0265false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse56320000005632USD$falsefalsefalse2truefalsefalse54270000005427USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2266false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse149falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_CollateralizedLoanObligationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseCollateralized loan obligations [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedLoanObligationsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0267true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0268false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse12470000001247USD$falsefalsefalse2truefalsefalse17010000001701USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2269false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse151falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_InvestmentFundsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseInvestment funds [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_InvestmentFundsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0270true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0271false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse9300000093USD$falsefalsefalse2truefalsefalse7600000076USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2272false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse153falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_TotalExposureMember_wfc_SecuritizedLoansByTypeAxis_OtherSecuritizationsAndTransactionsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTotal exposure [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TotalExposureMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberfalsefalseOther securitizations and transactions [Member]wfc_SecuritizedLoansByTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherSecuritizationsAndTransactionsMemberwfc_SecuritizedLoansByTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0273true3us-gaap_VariableInterestEntityLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0274false4us-gaap_VariableInterestEntityEntityMaximumLossExposureAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse14140000001414USD$falsetruefalse2truefalsefalse14420000001442USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)
-Paragraph C6
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false2falseSecuritizations and Variable Interest Entities, Significant Continuing Involvement - Unconsolidated VIEs (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/DisclosureSecuritizationsAndVariableInterestEntitiesSignificantContinuingInvolvementUnconsolidatedVIEsDetails2274
