2.4.0.8410000 - Disclosure - Guarantees, Pledged Assets and Collateral Textuals (Details)truefalsefalse1falseUSDfalsefalseFROM_Apr01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$2falseUSDfalsefalse$AS_OF_Dec31_2012http://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_BalanceSheetLocationAxis_FedFundsSoldSecuritiesPurchasedUnderResaleAgreementsAndOtherShortTermInvestmentsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseFed Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Member]us-gaap_BalanceSheetLocationAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_FedFundsSoldSecuritiesPurchasedUnderResaleAgreementsAndOtherShortTermInvestmentsMemberus-gaap_BalanceSheetLocationAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_BalanceSheetLocationAxis_FedFundsSoldSecuritiesPurchasedUnderResaleAgreementsAndOtherShortTermInvestmentsMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseFed Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Member]us-gaap_BalanceSheetLocationAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_FedFundsSoldSecuritiesPurchasedUnderResaleAgreementsAndOtherShortTermInvestmentsMemberus-gaap_BalanceSheetLocationAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_BalanceSheetLocationAxis_LoansAndFinanceReceivablesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseLoans [Member]us-gaap_BalanceSheetLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansAndFinanceReceivablesMemberus-gaap_BalanceSheetLocationAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_BalanceSheetLocationAxis_LoansAndFinanceReceivablesMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseLoans [Member]us-gaap_BalanceSheetLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansAndFinanceReceivablesMemberus-gaap_BalanceSheetLocationAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_GuaranteeObligationsByNatureAxis_DirectPayLettersOfCreditMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseDirect pay letters of credit (DPLCs) [Member]us-gaap_GuaranteeObligationsByNatureAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DirectPayLettersOfCreditMemberus-gaap_GuaranteeObligationsByNatureAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_GuaranteeObligationsByNatureAxis_DirectPayLettersOfCreditMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseDirect pay letters of credit (DPLCs) [Member]us-gaap_GuaranteeObligationsByNatureAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_DirectPayLettersOfCreditMemberus-gaap_GuaranteeObligationsByNatureAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_GuaranteeObligationsByNatureAxis_ThirdPartyClearingIndemnificationsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseThird party clearing indemnifications [Member]us-gaap_GuaranteeObligationsByNatureAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ThirdPartyClearingIndemnificationsMemberus-gaap_GuaranteeObligationsByNatureAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_GuaranteeObligationsByNatureAxis_ThirdPartyClearingIndemnificationsMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseThird party clearing indemnifications [Member]us-gaap_GuaranteeObligationsByNatureAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ThirdPartyClearingIndemnificationsMemberus-gaap_GuaranteeObligationsByNatureAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11falseUSDtruefalseFROM_Jan01_2013_TO_Jun30_2013_us-gaap_GuaranteeObligationsByNatureAxis_IndemnificationGuaranteeMemberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseSecurities lending and other indemnifications [Member]us-gaap_GuaranteeObligationsByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_IndemnificationGuaranteeMemberus-gaap_GuaranteeObligationsByNatureAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$12falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_GuaranteeObligationsByNatureAxis_IndemnificationGuaranteeMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseSecurities lending and other indemnifications [Member]us-gaap_GuaranteeObligationsByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_IndemnificationGuaranteeMemberus-gaap_GuaranteeObligationsByNatureAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_ObligationToRepurchaseReceivablesSoldMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLoans and MHFS sold with recourse [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ObligationToRepurchaseReceivablesSoldMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14falseUSDtruefalse$FROM_Apr01_2012_TO_Jun30_2012_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_ObligationToRepurchaseReceivablesSoldMemberhttp://www.sec.gov/CIK0000072971duration2012-04-01T00:00:002012-06-30T00:00:00falsefalseLoans and MHFS sold with recourse [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ObligationToRepurchaseReceivablesSoldMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$15falseUSDtruefalse$FROM_Jan01_2013_TO_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_ObligationToRepurchaseReceivablesSoldMemberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseLoans and MHFS sold with recourse [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ObligationToRepurchaseReceivablesSoldMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16falseUSDtruefalse$FROM_Jan01_2012_TO_Jun30_2012_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_ObligationToRepurchaseReceivablesSoldMemberhttp://www.sec.gov/CIK0000072971duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseLoans and MHFS sold with recourse [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ObligationToRepurchaseReceivablesSoldMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$17falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_TradingAccountAssetsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTrading assets and other [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_TradingAccountAssetsMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$18falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_TradingAccountAssetsMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseTrading assets and other [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_TradingAccountAssetsMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$19falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseAvailable for sale Securities [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$20falseUSDtruefalse$AS_OF_Dec31_2012_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseAvailable for sale Securities [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true4wfc_GuaranteesTextualsAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false5us-gaap_GuaranteeObligationsMaximumExposureus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5977100000059771000000USD$falsetruefalse2truefalsefalse6160000000061600000000USD$falsetruefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse1720000000017200000000USD$falsetruefalse8truefalsefalse1850000000018500000000USD$falsetruefalse9truefalsefalse29000000002900000000USD$falsetruefalse10truefalsefalse21000000002100000000USD$falsetruefalse11truefalsefalse32440000003244000000USD$falsetruefalse12truefalsefalse25410000002541000000USD$falsetruefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryMaximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 45
-Paragraph 13
-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.
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248
false23false5us-gaap_GuaranteeObligationsTermus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00These arrangements are for an indefinite period of time whereby we indemnify our clients against default by the borrower in returning these lent securities. This indemnity is supported by collateral received from the borrowers and is generally in the form of cash or highly liquid securities that are marked to market daily. falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringDescribe the approximate term of the guarantee or each group of similar guarantees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 45
-Paragraph 13
-Subparagraph a
-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.
false04false5us-gaap_SecuritiesReceivedAsCollateralus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse397000000397000000falsefalsefalse2truefalsefalse443000000443000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph a(3)
-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.
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 15
-Subparagraph a, b, c, d
-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.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 10
-Section 05
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=7517284&loc=d3e93645-111703
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=7523297&loc=d3e113969-111729
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Paragraph 49
-IssueDate 2006-05-01
-Chapter 4
-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.
Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 91
-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.
false25false5us-gaap_SecuritiesLoanedus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse385000000385000000falsefalsefalse2truefalsefalse436000000436000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying value of securities loaned to other entities.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph a
-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.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 405
-Section 55
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6476329&loc=d3e44140-110984
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Paragraph 32
-IssueDate 2006-05-01
-Chapter 4
-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.
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 91, 93
-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.
false26false5wfc_ThirdPartyClearingCustomerObligationswfc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9truefalsefalse655000000655000000falsefalsefalse10truefalsefalse579000000579000000falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of customer obligations outstanding at the balance sheet date due to third-party clearing agents for various securities transactions, including short sales, margin account settlements, and securities borrowingsNo definition available.false27false5wfc_CollateralProvidedToThirdPartyClearingAgentswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9truefalsefalse36000000003600000000falsefalsefalse10truefalsefalse31000000003100000000falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of collateral customers have provided to third-party clearing agents to minimize the risk of loss on various securities transactionsNo definition available.false28false5wfc_PercentageShareOfLossesOwedOnLoansAndMhfsSoldWithRecoursewfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primarily all of these programs and arrangements require that we share in the loans’ credit exposure for their remaining life by providing recourse to the GSE, up to 33.33% of actual losses incurred on a pro-rata basis.falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringRecourse owed by a guarantor for percentage of actual losses incurred on a pro-rata basis for certain loans or securitizations sold with recourseNo definition available.false09false5wfc_AmountOfLoansRepurchasedDuringPeriodwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13truefalsefalse70000007000000falsefalsefalse14truefalsefalse1000000010000000falsefalsefalse15truefalsefalse1800000018000000falsefalsefalse16truefalsefalse1600000016000000falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of loans repurchased during period.No definition available.false210false5wfc_PledgedCollateralAssetsRelatedToConsolidatedVieswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1070000000010700000000falsefalsefalse2truefalsefalse1460000000014600000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryPledged collateral assets related to consolidated VIEs which can only be used to settle the liabilities of those entities.No definition available.false211false5us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterpartyus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17truefalsefalse3430000000034300000000falsefalsefalse18truefalsefalse2740000000027400000000falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions where counterparty has the right to re-pledge such.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 15
-Subparagraph a
-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.
false212false5us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAmountNotEligibleToBeRepledgedByCounterpartyus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse98000000009800000000falsefalsefalse2truefalsefalse91000000009100000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19truefalsefalse88000000008800000000falsefalsefalse20truefalsefalse84000000008400000000falsefalsefalsexbrli:monetaryItemTypemonetaryFair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions where counterparty does not have the right to re-pledge such.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B6
-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.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph a(2)
-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.
false213false5wfc_SecuritiesPurchasedUnderAgreementsToResellAndSecuritiesBorrowedNetAmountInConsolidatedBalanceSheetwfc_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:monetaryItemTypemonetaryAmount, after effects of master repurchase agreements and master securities lending agreements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price, and of securities borrowed from entities in exchange for collateral.No definition available.false214false5wfc_SecuritiesBorrowedFairValueOfCollateralwfc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5130000000051300000000falsefalsefalse2truefalsefalse4660000000046600000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value of the securities received as collateral against securities borrowed.No definition available.false215false5us-gaap_FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledgedus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5130000000051300000000falsefalsefalse2truefalsefalse4660000000046600000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis is the fair value as of the date of each statement of financial position presented of the collateral that is permitted, by contact or custom, to be sold or re-pledged.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph a(3)
-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.
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729
false216false5us-gaap_FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledgedus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3050000000030500000000falsefalsefalse2truefalsefalse2970000000029700000000falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value as of the balance sheet date of the collateral, or portion thereof, that has been re-pledged, delivered, or otherwise used (generally under repurchase agreements, securities lending agreements or to cover short sales).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729
false217false5wfc_SecuritiesLoanedFairValueOfCollateralwfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4420000000044200000000USD$falsetruefalse2truefalsefalse3640000000036400000000USD$falsetruefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value of the securities pledged as collateral against securities loaned.No definition available.false2falseGuarantees, Pledged Assets and Collateral Textuals (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/GuaranteesPledgedAssetsAndCollateralTextualsDetails2017
