2.4.0.8413030 - Disclosure - Fair Value, Transfers Between Fair Value Levels (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$1true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false4wfc_FairValueLevelTransferAmountTotalwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsetruefalse2truefalsefalse00USD$falsetruefalse3truefalsefalse00USD$falsetruefalse4truefalsefalse00USD$falsetruefalsexbrli:monetaryItemTypemonetaryTotal transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false23false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_TradingSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseTrading Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TradingSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse04true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse05false4wfc_FairValueLevelTransferAmountTotalwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTotal transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false26false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse9falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseAvailable for sale Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse07true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse08false4wfc_FairValueLevelTransferAmountTotalwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTotal transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false29false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse13falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_MortgagesHeldForSaleMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseMortgages held for sale [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_MortgagesHeldForSaleMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse010true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse011false4wfc_FairValueLevelTransferAmountTotalwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTotal transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false212false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse17falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_LoansReceivableMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLoans [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansReceivableMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse013true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse014false4wfc_FairValueLevelTransferAmountTotalwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTotal transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false215false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse21falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_DerivativeMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseNet derivative assets and liabilities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DerivativeMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse016true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse017false4wfc_FairValueLevelTransferAmountTotalwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTotal transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false218false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse25falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Memberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse019true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse020false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse1700000017USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false221false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-246000000-246USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse-246000000-246USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false222false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse29falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_TradingSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseTrading Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TradingSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse023true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse024false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false225false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-246000000-246USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse-246000000-246USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false226false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse33falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseAvailable for sale Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse027true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse028false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse1700000017USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false229false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false230false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse37falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_MortgagesHeldForSaleMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseMortgages held for sale [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_MortgagesHeldForSaleMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse031true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse032false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false233false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false234false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse41falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_LoansReceivableMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseLoans [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansReceivableMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse035true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse036false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false237false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false238false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse45falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_DerivativeMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseNet derivative assets and liabilities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DerivativeMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse039true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse040false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false241false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false242false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse49falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Memberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse043true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse044false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse605000000605USD$falsefalsefalse2truefalsefalse40080000004008USD$falsefalsefalse3truefalsefalse1160300000011603USD$falsefalsefalse4truefalsefalse42090000004209USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false245false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-82000000-82USD$falsefalsefalse2truefalsefalse-98000000-98USD$falsefalsefalse3truefalsefalse-221000000-221USD$falsefalsefalse4truefalsefalse-234000000-234USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false246false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse53falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_TradingSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseTrading Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TradingSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse047true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse048false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse266000000266USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse468000000468USD$falsefalsefalse4truefalsefalse1000000010USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false249false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-1000000-1USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse-26000000-26USD$falsefalsefalse4truefalsefalse-14000000-14USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false250false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse57falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseAvailable for sale Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse051true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse052false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse165000000165USD$falsefalsefalse2truefalsefalse39430000003943USD$falsefalsefalse3truefalsefalse1084100000010841USD$falsefalsefalse4truefalsefalse40360000004036USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false253false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse-14000000-14USD$falsefalsefalse3truefalsefalse-17000000-17USD$falsefalsefalse4truefalsefalse-57000000-57USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false254false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse61falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_MortgagesHeldForSaleMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseMortgages held for sale [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_MortgagesHeldForSaleMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse055true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse056false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4600000046USD$falsefalsefalse2truefalsefalse6400000064USD$falsefalsefalse3truefalsefalse139000000139USD$falsefalsefalse4truefalsefalse150000000150USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false257false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-81000000-81USD$falsefalsefalse2truefalsefalse-84000000-84USD$falsefalsefalse3truefalsefalse-178000000-178USD$falsefalsefalse4truefalsefalse-171000000-171USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false258false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse65falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_LoansReceivableMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseLoans [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansReceivableMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse059true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse060false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5800000058USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse106000000106USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false261false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false262false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse69falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_DerivativeMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseNet derivative assets and liabilities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DerivativeMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse063true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse064false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse7000000070USD$falsefalsefalse2truefalsefalse10000001USD$falsefalsefalse3truefalsefalse4900000049USD$falsefalsefalse4truefalsefalse1300000013USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false265false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse80000008USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false266false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse73falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Memberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse067true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse068false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse8200000082USD$falsefalsefalse2truefalsefalse9800000098USD$falsefalsefalse3truefalsefalse204000000204USD$falsefalsefalse4truefalsefalse234000000234USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false269false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-359000000-359USD$falsefalsefalse2truefalsefalse-4008000000-4008USD$falsefalsefalse3truefalsefalse-11357000000-11357USD$falsefalsefalse4truefalsefalse-4209000000-4209USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false270false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse77falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_TradingSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseTrading Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TradingSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse071true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse072false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10000001USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse2600000026USD$falsefalsefalse4truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false273false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-20000000-20USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse-222000000-222USD$falsefalsefalse4truefalsefalse-10000000-10USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false274false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse81falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseAvailable for sale Securities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse075true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse076false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse1400000014USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse5700000057USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false277false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-165000000-165USD$falsefalsefalse2truefalsefalse-3943000000-3943USD$falsefalsefalse3truefalsefalse-10841000000-10841USD$falsefalsefalse4truefalsefalse-4036000000-4036USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false278false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse85falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_MortgagesHeldForSaleMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseMortgages held for sale [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_MortgagesHeldForSaleMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse079true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse080false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse8100000081USD$falsefalsefalse2truefalsefalse8400000084USD$falsefalsefalse3truefalsefalse178000000178USD$falsefalsefalse4truefalsefalse171000000171USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false281false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-46000000-46USD$falsefalsefalse2truefalsefalse-64000000-64USD$falsefalsefalse3truefalsefalse-139000000-139USD$falsefalsefalse4truefalsefalse-150000000-150USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false282false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse89falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_LoansReceivableMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseLoans [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansReceivableMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse083true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse084false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false285false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-58000000-58USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse-106000000-106USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false286false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse93falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxis_DerivativeMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseNet derivative assets and liabilities [Member]wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DerivativeMemberwfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsByAssetTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse087true3wfc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTransfersBetweenFairValueLevelsLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse088false4wfc_FairValueLevelTransferInAmountwfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse-8000000-8USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTransfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false289false4wfc_FairValueLevelTransferOutAmountwfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-70000000-70USD$falsetruefalse2truefalsefalse-1000000-1USD$falsetruefalse3truefalsefalse-49000000-49USD$falsetruefalse4truefalsefalse-13000000-13USD$falsetruefalsexbrli:monetaryItemTypemonetaryTransfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred.No definition available.false2falseFair Value, Transfers Between Fair Value Levels (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/FairValueTransfersBetweenFairValueLevelsDetails489
