2.4.0.8407000 - Disclosure - Securitizations and Variable Interest Entities Textual (Details)truefalsefalse1falseUSDfalsefalse$FROM_Apr01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falseUSDfalsefalse$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/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$4falseUSDfalsefalse$FROM_Jan01_2012_TO_Jun30_2012http://www.sec.gov/CIK0000072971duration2012-01-01T00:00:002012-06-30T00:00:00USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falseUSDfalsefalse$AS_OF_Dec31_2012http://www.sec.gov/CIK0000072971instant2012-12-31T00:00:000001-01-01T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false5us-gaap_ShortTermBorrowingsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5698300000056983000000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse5698300000056983000000USD$falsetruefalse4falsefalsefalse00falsefalsefalse5truefalsefalse5717500000057175000000USD$falsetruefalsexbrli:monetaryItemTypemonetaryReflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19
-Subparagraph a
-Article 5
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),16(a)(1))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Subparagraph a(1)
-Article 7
Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 13
-Subparagraph 2, 3
-Article 9
false23false5us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse7484300000074843000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse7484300000074843000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse7666800000076668000000USD$falsefalsefalsexbrli:monetaryItemTypemonetarySum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(1),(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Article 7
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Subparagraph 1, 5
-Article 9
false24false5us-gaap_LongTermDebtus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse123375000000123375000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse123375000000123375000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse127379000000127379000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 7
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9
Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5
false25false5wfc_PercentageOfUnderlyingCollateralRatedAsInvestmentGradewfc_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truetruefalse0.750.75falsefalsefalse2falsefalsefalse00falsefalsefalse3truetruefalse0.750.75falsefalsefalse4falsefalsefalse00falsefalsefalse5truetruefalse0.830.83falsefalsefalsenum:percentItemTypepure% of underlying collateral rated as investment gradeNo definition available.false06false5us-gaap_GainLossOnSecuritizationOfFinancialAssetsus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4600000046000000USD$falsefalsefalse2truefalsefalse5300000053000000USD$falsefalsefalse3truefalsefalse110000000110000000USD$falsefalsefalse4truefalsefalse6400000064000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryA gain (loss) realized on a transfer, accounted for as a sale, of all or a portion of financial assets in which the transferor surrenders control and receives consideration other than a beneficial interest in the assets transferred. Reflects the amount of sales proceeds in excess of, or deficient from, the sum of the carrying amounts of transferred financial assets plus transaction costs.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7,9)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph h(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.
false27false5us-gaap_ServicingAssetAtFairValueAmountus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1418500000014185000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1418500000014185000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse1153800000011538000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 13A, 13B
-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 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746
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)(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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B9
-Subparagraph a(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.
false28false5us-gaap_ServicingAssetAtAmortizedValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse11760000001176000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse11760000001176000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse11600000001160000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmortized carrying amount (balance) as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7524895&loc=d3e120260-111741
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 13A, 13B
-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 FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B10
-Subparagraph a(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.
Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph g(1)(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.
false29false5us-gaap_PrincipalAmountOutstandingOnLoansSecuritizedus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse14144240000001414424000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse14144240000001414424000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse14141030000001414103000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis is the principal amount outstanding for securitized loans only (across all types of loans).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph i
-Subclause a
-Clause 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B11
-Subparagraph b
-Clause 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false210false5us-gaap_DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritizedus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2964600000029646000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse2964600000029646000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse3390000000033900000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis is the principal amount of loans (across all types of loans) that are overdue in payment by a set number of days.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)(4)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph i
-Subclause b
-Clause 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 FASB Staff Position (FSP)
-Number FAS140-4 and FIN46(R)-8
-Paragraph B11
-Subparagraph b
-Clause 6
-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.
false211false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_ViesThatWeConsolidateRecourseMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseVIEs that we consolidate, recourse [Member]us-gaap_VariableInterestEntitiesByClassificationOfEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_ViesThatWeConsolidateRecourseMemberus-gaap_VariableInterestEntitiesByClassificationOfEntityAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse012true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse013false5us-gaap_ShortTermBorrowingsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse21000000002100000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryReflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19
-Subparagraph a
-Article 5
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),16(a)(1))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Subparagraph a(1)
-Article 7
Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 13
-Subparagraph 2, 3
-Article 9
false214false5us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse876000000876000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse876000000876000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse767000000767000000USD$falsefalsefalsexbrli:monetaryItemTypemonetarySum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(1),(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Article 7
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Subparagraph 1, 5
-Article 9
false215false5us-gaap_LongTermDebtus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2900000029000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse2900000029000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse2900000029000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 7
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9
Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5
false216false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse8falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_FederalNationalMortgageAssociationFederalHomeLoanMortgageCorporationAndGovernmentNationalMortgageAssociationMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseFNMA, FHLMC and GNMA [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_FederalNationalMortgageAssociationFederalHomeLoanMortgageCorporationAndGovernmentNationalMortgageAssociationMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse017true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse018false5us-gaap_PrincipalAmountOutstandingOnLoansSecuritizedus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse13000000000001300000000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse13000000000001300000000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse13000000000001300000000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis is the principal amount outstanding for securitized loans only (across all types of loans).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph i
-Subclause a
-Clause 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 FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B11
-Subparagraph b
-Clause 6
-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.
false219false5us-gaap_DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritizedus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1640000000016400000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1640000000016400000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse1740000000017400000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis is the principal amount of loans (across all types of loans) that are overdue in payment by a set number of days.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)(4)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph i
-Subclause b
-Clause 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4 and FIN46(R)-8
-Paragraph B11
-Subparagraph b
-Clause 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false220false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse10falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FinancialInstrumentAxis_ResidentialMortgageMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseResidential Mortgage [Member]us-gaap_FinancialInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialMortgageMemberus-gaap_FinancialInstrumentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse021true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse022false5wfc_FinancialAssetsTransferredInSecuritizationswfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse111200000000111200000000USD$falsefalsefalse2truefalsefalse129700000000129700000000USD$falsefalsefalse3truefalsefalse211900000000211900000000USD$falsefalsefalse4truefalsefalse269100000000269100000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying value of assets transferred in a securitization or asset-backing financing arrangement accounted for as a sale.No definition available.false223false5us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSaleus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryReflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B11
-Subparagraph a
-Clause 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.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph h
-Clause 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.
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 10
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7881339&loc=d3e96813-111708
false224false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse14falseUSDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_FinancialInstrumentAxis_CommercialLoanMemberhttp://www.sec.gov/CIK0000072971duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseCommercial Mortgage [Member]us-gaap_FinancialInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialLoanMemberus-gaap_FinancialInstrumentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse025true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse026false5wfc_FinancialAssetsTransferredInSecuritizationswfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse15000000001500000000USD$falsefalsefalse2truefalsefalse955000000955000000USD$falsefalsefalse3truefalsefalse32000000003200000000USD$falsefalsefalse4truefalsefalse955000000955000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying value of assets transferred in a securitization or asset-backing financing arrangement accounted for as a sale.No definition available.false227false5us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSaleus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3800000038000000USD$falsefalsefalse2truefalsefalse3900000039000000USD$falsefalsefalse3truefalsefalse100000000100000000USD$falsefalsefalse4truefalsefalse3900000039000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryReflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B11
-Subparagraph a
-Clause 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.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph h
-Clause 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.
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 10
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7881339&loc=d3e96813-111708
false228false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse18falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_LoansReceivableMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseLoans [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LoansReceivableMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse029true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse030false5wfc_VariableInterestEntityAssetOwnedAndPledgedAsCollateralwfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse65000000006500000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse65000000006500000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse64000000006400000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying amount of assets pledged to collateralize the borrowings of consolidated variable interest entity.No definition available.false231false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse20falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_AvailableforsaleSecuritiesMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseAvailable for sale Securities [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AvailableforsaleSecuritiesMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse032true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse033false5wfc_VariableInterestEntityAssetOwnedAndPledgedAsCollateralwfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse183000000183000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse183000000183000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse179000000179000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying amount of assets pledged to collateralize the borrowings of consolidated variable interest entity.No definition available.false234false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse22falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis_CashAndCashEquivalentsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCash and cash equivalents [Member]us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CashAndCashEquivalentsMemberus-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse035true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse036false5wfc_VariableInterestEntityAssetOwnedAndPledgedAsCollateralwfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse180000000180000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse180000000180000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse138000000138000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying amount of assets pledged to collateralize the borrowings of consolidated variable interest entity.No definition available.false237false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse24falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel2Member_us-gaap_FinancialInstrumentAxis_CommercialLoanMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseLevel 2 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseCommercial Mortgage [Member]us-gaap_FinancialInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialLoanMemberus-gaap_FinancialInstrumentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse038true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse039false5us-gaap_AvailableForSaleSecuritiesFairValueDisclosureus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2300000023000000USD$falsefalsefalse2truefalsefalse4100000041000000USD$falsefalsefalse3truefalsefalse2300000023000000USD$falsefalsefalse4truefalsefalse4100000041000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli: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 item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-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 Accounting Standards Codification
-Glossary Available-for-Sale Securities
-URI http://asc.fasb.org/extlink&oid=6505594
false240false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse26falseUSDtruefalse$FROM_Jan01_2013_TO_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_us-gaap_FinancialInstrumentAxis_ResidentialMortgageMemberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseResidential Mortgage [Member]us-gaap_FinancialInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialMortgageMemberus-gaap_FinancialInstrumentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse041true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse042false5us-gaap_ServicingAssetAtFairValueAmountus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse20000000002000000000USD$falsefalsefalse2truefalsefalse26000000002600000000USD$falsefalsefalse3truefalsefalse20000000002000000000USD$falsefalsefalse4truefalsefalse26000000002600000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 13A, 13B
-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 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746
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)(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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B9
-Subparagraph a(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.
false243false5wfc_LiabilityForMortgageRepurchaseReservesFairValueMeasurementWithUnobservableInputsAdditionswfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse9800000098000000USD$falsefalsefalse4truefalsefalse134000000134000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe increase during the reporting period in liability for mortgage repurchase reserves that are measured using Level 3 measurements. This increase is related to new servicing rights that are created when mortgages are sold or transferred.No definition available.false244false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse28falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel3Member_us-gaap_FinancialInstrumentAxis_CommercialLoanMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseLevel 3 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseCommercial Mortgage [Member]us-gaap_FinancialInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialLoanMemberus-gaap_FinancialInstrumentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse045true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse046false5us-gaap_ServicingAssetAtFairValueAmountus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse90000009000000USD$falsefalsefalse2truefalsefalse60000006000000USD$falsefalsefalse3truefalsefalse90000009000000USD$falsefalsefalse4truefalsefalse60000006000000USD$falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 13A, 13B
-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 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746
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)(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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B9
-Subparagraph a(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.
false247false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse30falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_StatementEquityComponentsAxis_EquityInterestsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseEquity Interests [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_EquityInterestsMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse048true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse049false5us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse58000000005800000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse58000000005800000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse58000000005800000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.No definition available.false250false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse32falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_InvestmentTypeAxis_LongTermDebtMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseLong-term debt [Member]us-gaap_InvestmentTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LongTermDebtMemberus-gaap_InvestmentTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse051true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse052false5us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilitiesus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse60000000006000000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse60000000006000000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse60000000006000000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5710-111685
false253false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse34falseUSDtruefalse$AS_OF_Jun30_2013_us-gaap_InvestmentTypeAxis_CommercialMortgageServicingMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCommercial Mortgage Servicing [Member]us-gaap_InvestmentTypeAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_CommercialMortgageServicingMemberus-gaap_InvestmentTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse054true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse055false5us-gaap_InterestsContinuedToBeHeldByTransferorFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse15000000001500000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse15000000001500000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse14000000001400000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe carrying amount (fair value) as of the balance sheet date of the transferor's interests in transferred financial assets (typically securitized receivables, generally not involved in the collection of principal) following transfer of significant portions of such financial instruments to other parties. Such interests could be ancillary cash flows and interest-only strips.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B11
-Subparagraph b(5)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph i
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
false256false5wfc_SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOfOtherThan10Or20PercentAdverseChangeInInterestRatewfc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse184000000184000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse184000000184000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse139000000139000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe hypothetical financial impact of a specified adverse percentage change in interest rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date.No definition available.false257false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse36falseUSDtruefalse$FROM_Jan01_2013_TO_Jun30_2013_invest_InvestmentAxis_TrustPreferredSecuritiesMemberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseTrust Preferred Securities [Member]invest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TrustPreferredSecuritiesMemberinvest_InvestmentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse058true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse059false5wfc_TrustPreferredSecuritiesRedeemedValuewfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse28000000002800000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryValue of trust preferred securities redeemed during period.No definition available.false260false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse37falseUSDtruefalse$AS_OF_Jun30_2013_invest_InvestmentAxis_TrustPreferredSecuritiesMember_us-gaap_StatementEquityComponentsAxis_PreferredStockMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTrust Preferred Securities [Member]invest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TrustPreferredSecuritiesMemberinvest_InvestmentAxisexplicitMemberfalsefalsePreferred stock [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PreferredStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse061true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse062false5wfc_CarryingAmountOfEquityRelatedToUnconsolidatedVariableInterestEntitieswfc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse25000000002500000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse25000000002500000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse25000000002500000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying amount of equity related to unconsolidated variable interest entities through the issuance of trust preferred securities.No definition available.false263false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse39falseUSDtruefalse$AS_OF_Jun30_2013_invest_InvestmentAxis_TrustPreferredSecuritiesMember_us-gaap_InvestmentTypeAxis_JuniorSubordinatedDebtMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseTrust Preferred Securities [Member]invest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_TrustPreferredSecuritiesMemberinvest_InvestmentAxisexplicitMemberfalsefalseJunior Subordinated Debt [Member]us-gaap_InvestmentTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_JuniorSubordinatedDebtMemberus-gaap_InvestmentTypeAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse064true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse065false5wfc_CarryingAmountOfAssetsLiabilitiesRelatedToUnconsolidatedVariableInterestEntitieswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-2000000000-2000000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse-2000000000-2000000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse-4900000000-4900000000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying amount of the assets liabilities related to unconsolidated variable interest entities through the issuance of trust preferred securities.No definition available.false266false0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse41falseUSDtruefalse$AS_OF_Jun30_2013_invest_InvestmentAxis_OtherInvestmentsMemberhttp://www.sec.gov/CIK0000072971instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther Investments [Member]invest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherInvestmentsMemberinvest_InvestmentAxisexplicitMemberUSDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse067true4wfc_SecuritizationsAndVariableInterestEntitiesTextualAbstractwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse068false5wfc_AuctionRateSecuritiesIssuedByVariableInterestEntitieswfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse704000000704000000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse704000000704000000USD$falsetruefalse4falsefalsefalse00falsefalsefalse5truefalsefalse686000000686000000USD$falsetruefalsexbrli:monetaryItemTypemonetaryAuction rate securities (debt instruments and preferred equities) issued by variable interest entities.No definition available.false2falseSecuritizations and Variable Interest Entities Textual (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/SecuritizationsAndVariableInterestEntitiesTextualDetails568
