2.4.0.8408040 - Disclosure - Mortgage Banking Activities, Noninterest Income (Details)truefalseIn Millions, unless otherwise specifiedfalse1falseUSDfalsefalse$FROM_Apr01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falseUSDfalsefalse$FROM_Apr01_2012_TO_Jun30_2012http://www.sec.gov/CIK0000072971duration2012-04-01T00:00:002012-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3falseUSDfalsefalse$FROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falseUSDfalsefalse$FROM_Jan01_2012_TO_Jun30_2012http://www.sec.gov/CIK0000072971duration2012-01-01T00:00:002012-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true3wfc_ServicingFeesAndOtherChargesAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false4us-gaap_ContractuallySpecifiedServicingFeesAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse11020000001102USD$falsetruefalse2truefalsefalse11640000001164USD$falsetruefalse3truefalsefalse22270000002227USD$falsetruefalse4truefalsefalse23120000002312USD$falsetruefalsexbrli:monetaryItemTypemonetaryAll amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (c)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph e(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 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B8
-Subparagraph c
-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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 20
-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.
false23false4us-gaap_LateFeeIncomeGeneratedByServicingFinancialAssetsAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5800000058falsefalsefalse2truefalsefalse6300000063falsefalsefalse3truefalsefalse118000000118falsefalsefalse4truefalsefalse129000000129falsefalsefalsexbrli:monetaryItemTypemonetaryAll amounts that are due to the servicer of a financial asset as a result of the debt holder not meeting the monthly payment terms.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph e(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 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B8
-Subparagraph c
-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.
false24false4us-gaap_AncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse8500000085falsefalsefalse2truefalsefalse6300000063falsefalsefalse3truefalsefalse167000000167falsefalsefalse4truefalsefalse140000000140falsefalsefalsexbrli:monetaryItemTypemonetaryAll amounts that are due to the servicer of a financial asset, excluding contractually specified servicing fees and late fees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph e(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 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B8
-Subparagraph c
-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.
false25false4wfc_UnreimbursedDirectServicingCostswfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-215000000-215falsefalsefalse2truefalsefalse-220000000-220falsefalsefalse3truefalsefalse-485000000-485falsefalsefalse4truefalsefalse-500000000-500falsefalsefalsexbrli:monetaryItemTypemonetaryDirect servicing costs of a servicer of financial assets that are not reimbursed, primarily related to foreclosure expenses and other interest costs.No definition available.false26false4wfc_ServicingFeesNonInterestIncomewfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse10300000001030falsefalsefalse2truefalsefalse10700000001070falsefalsefalse3truefalsefalse20270000002027falsefalsefalse4truefalsefalse20810000002081falsefalsefalsexbrli:monetaryItemTypemonetaryServicing fees noninterest income.No definition available.true27true3us-gaap_ServicingAssetAtFairValueAmountRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse08false4us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptionsus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse18670000001867falsefalsefalse2truefalsefalse-1631000000-1631falsefalsefalse3truefalsefalse26280000002628falsefalsefalse4truefalsefalse-1789000000-1789falsefalsefalsexbrli:monetaryItemTypemonetaryThe net Increase or Decrease in fair value as a result of changes in the inputs, assumptions, or model used to calculate the fair value of servicing assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(i)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Paragraph B9
-Subparagraph a(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 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph f(1)(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.
false29false4us-gaap_ServicingAssetAtFairValueOtherChangesInFairValueus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-643000000-643falsefalsefalse2truefalsefalse-712000000-712falsefalsefalse3truefalsefalse-1393000000-1393falsefalsefalse4truefalsefalse-1355000000-1355falsefalsefalsexbrli:monetaryItemTypemonetaryThe net Increase or Decrease in fair value as a result of other changes that are not additions, disposals, or a result of change in the inputs, assumptions, or model used to calculate the fair value of servicing assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(ii)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph f(1)(d)(ii)
-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 FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B9
-Subparagraph a(4)(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.
false210false4us-gaap_ServicingAssetAtFairValuePeriodIncreaseDecreaseus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse12240000001224falsefalsefalse2truefalsefalse-2343000000-2343falsefalsefalse3truefalsefalse12350000001235falsefalsefalse4truefalsefalse-3144000000-3144falsefalsefalsexbrli:monetaryItemTypemonetaryThe increase (decrease) in the fair value of servicing assets that are subsequently measured at fair value.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B9
-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 Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph f(1)
-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.
false211false3us-gaap_AmortizationOfMortgageServicingRightsMSRsus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-62000000-62falsefalsefalse2truefalsefalse-56000000-56falsefalsefalse3truefalsefalse-124000000-124falsefalsefalse4truefalsefalse-114000000-114falsefalsefalsexbrli:monetaryItemTypemonetaryThe periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph g(1)(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.
false212false3wfc_NetDerivativeGainsLossesFromEconomicHedgesRelatedToMortgageServicingActivitieswfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-1799000000-1799falsefalsefalse2truefalsefalse20080000002008falsefalsefalse3truefalsefalse-2431000000-2431falsefalsefalse4truefalsefalse21080000002108falsefalsefalsexbrli:monetaryItemTypemonetaryNet derivative gains (losses) from economic hedges related to mortgage servicing activities.No definition available.false213false3wfc_MortgageServicingNoninterestIncomewfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse393000000393falsefalsefalse2truefalsefalse679000000679falsefalsefalse3truefalsefalse707000000707falsefalsefalse4truefalsefalse931000000931falsefalsefalsexbrli:monetaryItemTypemonetaryTotal mortgage servicing noninterest income.No definition available.false214false3wfc_GainLossOnMortgageLoanOriginationAndSalesActivitieswfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse24090000002409falsefalsefalse2truefalsefalse22140000002214falsefalsefalse3truefalsefalse48890000004889falsefalsefalse4truefalsefalse48320000004832falsefalsefalsexbrli:monetaryItemTypemonetaryGain loss on mortgage loan origination and sales activities.No definition available.false215false3wfc_FeesAndCommissionMortgageBankingwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse28020000002802falsefalsefalse2truefalsefalse28930000002893falsefalsefalse3truefalsefalse55960000005596falsefalsefalse4truefalsefalse57630000005763falsefalsefalsexbrli:monetaryItemTypemonetaryThe noninterest income derived from mortgage banking activities.No definition available.false216false3wfc_ServicingAssetAtFairValueSumOfChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptionsAndNetDerivativeGainsLosseswfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse6800000068USD$falsetruefalse2truefalsefalse377000000377USD$falsetruefalse3truefalsefalse197000000197USD$falsetruefalse4truefalsefalse319000000319USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe sum of the net increase (decrease) in fair value included in income as a result of changes in the inputs, assumptions, or model used to calculate the fair value of servicing assets and net derivative gains (losses) from economic hedges.No definition available.false2falseMortgage Banking Activities, Noninterest Income (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/MortgageBankingActivitiesNoninterestIncomeDetails416
