2.2.0.25falsefalse40403 - Disclosure - Loans and Leases (Components of the Net Investment in Leveraged Leases) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse12/31/2010
USD ($)
USD ($) / shares
$As_Of_12_31_2010http://www.sec.gov/CIK0000093751instant2010-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Divide
http://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse12/31/2009
USD ($)
USD ($) / shares
$As_Of_12_31_2009http://www.sec.gov/CIK0000093751instant2009-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Divide
http://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$5false0us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureRentalReceivablesNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse21870000002187falsetruefalsefalsefalse2truefalsefalse26770000002677falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents leveraged lease rentals receivable, net of that portion of the rental applicable to principal and interest on t
he nonrecourse debt.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 43, 44
falsefalse6false0us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureResidualValueOfLeasedAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse118000000118falsefalsefalsefalsefalse2truefalsefalse129000000129falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe estimate of the value of the leased asset at the end of the lease term.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 43
falsefalse7false0stt_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureUnearnedIncomesttfalsecreditinstantLeveraged Leases Net Investment In Leveraged Leases Disclosure Unearned Incomefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-835000000-835falsefalsefalsefalsefalse2truefalsefalse-1090000000-1090falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLeveraged Leases Net Investment In Leveraged Leases Disclosure Unearned IncomeNo authoritative reference available.falsefalse8false0us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse14700000001470falsefalsefalsefalsefalse2truefalsefalse17160000001716falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 43
falsefalse9false0us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredTaxesArisingFromLeveragedLeasesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-463000000-463falsefalsefalsefalsefalse2truefalsefalse-505000000-505falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTaxes arising from arrangements meeting the criteria for classification as leveraged leases due to timing differences between accounting and tax income recognition.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 43
falsefalse10false0us-gaap_LeveragedLeasesBalanceSheetInvestmentInLeveragedLeasesNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1<
IsNumeric>truefalsefalse10070000001007falsetruefalsefalsefalse2truefalsefalse12110000001211falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRentals receivable and estimated residual value of leased assets less principal and interest on nonrecourse debt, unearned income, and deferred taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 47
falsefalse26Loans and Leases (Components of the Net Investment in Leveraged Leases) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue
