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-Subparagraph (e)(3)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612
false234false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse9falseUSDtruefalseFROM_Jan01_2013_TO_Jun30_2013_us-gaap_EligibleItemOrGroupForFairValueOptionAxis_OtherAssets1Memberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseOther Assets [Member]us-gaap_EligibleItemOrGroupForFairValueOptionAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_OtherAssets1Memberus-gaap_EligibleItemOrGroupForFairValueOptionAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$nanafalse035true3us-gaap_FairValueOptionQuantitativeDisclosuresLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse036false4us-gaap_OtherAssetsFairValueDisclosureus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse595000000595USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of assets categorized as other which are not in and of themselves material enough to require separate disclosure.No definition available.false237false4wfc_OtherAssetsUnpaidPrincipalwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00n/afalsefalsefalse2falsefalsefalse00n/afalsefalsefalsexbrli:stringItemTypestringFor nonmarketable securities, classified as other assets, for which the fair value option has been elected, this item represents the aggregate unpaid principal balance.No definition available.false038false4wfc_FairValueOptionAggregateDifferencesOtherAssetswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00n/afalsefalsefalse2falsefalsefalse00n/afalsefalsefalsexbrli:stringItemTypestringThis item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of nonmarketable equity securities, classified as other assets, for which the fair value option has been elected.No definition available.false039false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse11falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_EligibleItemOrGroupForFairValueOptionAxis_LongTermDebtMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseLong-term debt [Member]us-gaap_EligibleItemOrGroupForFairValueOptionAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LongTermDebtMemberus-gaap_EligibleItemOrGroupForFairValueOptionAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse040true3us-gaap_FairValueOptionQuantitativeDisclosuresLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse041false4us-gaap_LongTermDebtFairValueus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse-1000000-1USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.No definition available.false242false4wfc_LongTermDebtUnpaidPrincipalwfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-199000000-199USD$falsefalsefalse2truefalsefalse-1157000000-1157USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFor long-term debt for which the fair value option has been elected, this item represents the aggregate unpaid principal balance of those loans that are in nonaccrual status.No definition available.false243false4us-gaap_FairValueOptionAggregateDifferencesLongTermDebtInstrumentsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse199000000199USD$falsetruefalse2truefalsefalse11560000001156USD$falsetruefalsexbrli:monetaryItemTypemonetaryThis item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph d(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.
false2falseFair Value, Option, Carrying Amount (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/DisclosureFairValueOptionCarryingAmountDetails243
