2.4.0.8405020 - Disclosure - Loans and Allowance for Credit Losses, Significant Activity (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$FROM_Apr01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$FROM_Apr01_2012_TO_Jun30_2012http://www.sec.gov/CIK0000072971duration2012-04-01T00:00:002012-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$FROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$FROM_Jan01_2012_TO_Jun30_2012http://www.sec.gov/CIK0000072971duration2012-01-01T00:00:002012-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false 5us-gaap_FinancingReceivableSignificantPurchasesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse26240000002624USD$falsetruefalse2truefalsefalse73030000007303USD$falsetruefalse3truefalsefalse37290000003729USD$falsetruefalse4truefalsefalse93420000009342USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe amount of any significant purchases of financing receivables during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false23false 5us-gaap_FinancingReceivableSignificantSalesus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-1926000000-1926USD$falsefalsefalse2truefalsefalse-1285000000-1285USD$falsefalsefalse3truefalsefalse-4258000000-4258USD$falsefalsefalse4truefalsefalse-3258000000-3258USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of any significant sales of financing receivables during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false24false 5us-gaap_FinancingReceivableReclassificationToHeldForSaleus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedTerseLabel1truefalsefalse-58000000-58USD$falsefalsefalse2truefalsefalse1400000014USD$falsefalsefalse3truefalsefalse-145000000-145USD$falsefalsefalse4truefalsefalse-23000000-23USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of financing receivables reclassified to held for sale during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false25false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CommercialPortfolioSegmentMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseCommercial Portfolio Segment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialPortfolioSegmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse06true 4us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse07false 5us-gaap_FinancingReceivableSignificantPurchasesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse21220000002122USD$falsefalsefalse2truefalsefalse72190000007219USD$falsefalsefalse3truefalsefalse31480000003148USD$falsefalsefalse4truefalsefalse91750000009175USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of any significant purchases of financing receivables during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false28false 5us-gaap_FinancingReceivableSignificantSalesus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-1796000000-1796USD$falsefalsefalse2truefalsefalse-1115000000-1115USD$falsefalsefalse3truefalsefalse-3812000000-3812USD$falsefalsefalse4truefalsefalse-2935000000-2935USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of any significant sales of financing receivables during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false29false 5us-gaap_FinancingReceivableReclassificationToHeldForSaleus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedTerseLabel1truefalsefalse-53000000-53USD$falsefalsefalse2truefalsefalse1800000018USD$falsefalsefalse3truefalsefalse-133000000-133USD$falsefalsefalse4truefalsefalse-18000000-18USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of financing receivables reclassified to held for sale during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false210false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse9false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ConsumerPortfolioSegmentMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseConsumer Portfolio Segment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ConsumerPortfolioSegmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse011true 4us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse012false 5us-gaap_FinancingReceivableSignificantPurchasesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse502000000502USD$falsefalsefalse2truefalsefalse8400000084USD$falsefalsefalse3truefalsefalse581000000581USD$falsefalsefalse4truefalsefalse167000000167USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of any significant purchases of financing receivables during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false213false 5us-gaap_FinancingReceivableSignificantSalesus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-130000000-130USD$falsefalsefalse2truefalsefalse-170000000-170USD$falsefalsefalse3truefalsefalse-446000000-446USD$falsefalsefalse4truefalsefalse-323000000-323USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of any significant sales of financing receivables during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false214false 5us-gaap_FinancingReceivableReclassificationToHeldForSaleus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedTerseLabel1truefalsefalse-5000000-5USD$falsetruefalse2truefalsefalse-4000000-4USD$falsetruefalse3truefalsefalse-12000000-12USD$falsetruefalse4truefalsefalse-5000000-5USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe amount of financing receivables reclassified to held for sale during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false2falseLoans and Allowance for Credit Losses, Significant Activity (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/LoansAndAllowanceForCreditLossesSignificantActivityDetails414