2.4.0.8400310 - Disclosure - Investments in Marketable Securities (Realized and Unrealized Losses) (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$AS_OF_Jun30_2013http://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$AS_OF_Mar31_2013http://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_CorporateDebtSecuritiesMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCorporate debt securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_CorporateDebtSecuritiesMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseCorporate debt securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_USTreasuryAndGovernmentMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseU.S. government and agency obligations [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_USTreasuryAndGovernmentMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_USTreasuryAndGovernmentMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseU.S. government and agency obligations [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_USTreasuryAndGovernmentMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseU.S. government agency mortgage-backed securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseU.S. government agency mortgage-backed securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundUSGovernmentSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseU.S. government sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundUSGovernmentSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundUSGovernmentSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseU.S. government sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundUSGovernmentSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundShortTermSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseShort-term sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundShortTermSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$12false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundShortTermSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseShort-term sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundShortTermSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundRealReturnSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseReal return sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundRealReturnSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundRealReturnSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseReal return sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundRealReturnSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$15false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundInternationalSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseInternational sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundInternationalSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundInternationalSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseInternational sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundInternationalSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$17false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundMortgageSectorMemberhttp://www.sec.gov/CIK0000834071duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseMortgage sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundMortgageSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$18false USDtruefalse$FROM_Apr01_2012_TO_Jun30_2012_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundMortgageSectorMemberhttp://www.sec.gov/CIK0000834071duration2012-04-01T00:00:002012-06-30T00:00:00falsefalseMortgage sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundMortgageSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$19false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundMortgageSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseMortgage sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundMortgageSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$20false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundMortgageSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseMortgage sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundMortgageSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$21false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_DebtSecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_CommercialMortgageBackedSecuritiesMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNon-agency commercial mortgage-backed securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommercialMortgageBackedSecuritiesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseDebt instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$22false USDtruefalse$AS_OF_Jun30_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundEmergingMarketSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseEmerging market sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundEmergingMarketSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$23false USDtruefalse$AS_OF_Mar31_2013_tmcc_ScheduleOfAvailableForSaleSecuritiesAxis_EquitySecuritiesMember_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_MutualFundEmergingMarketSectorMemberhttp://www.sec.gov/CIK0000834071instant2013-03-31T00:00:000001-01-01T00:00:00falsefalseEmerging market sector fund [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrlditmcc_MutualFundEmergingMarketSectorMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalseEquity instruments [Member]tmcc_ScheduleOfAvailableForSaleSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMembertmcc_ScheduleOfAvailableForSaleSecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0OTTI losses recognized in income2false 5us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecuritiesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17truefalsefalse3000000030USD$falsetruefalse18truefalsefalse00USD$falsetruefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -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 FAS115-1/124-1 -Paragraph 15C -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. false2Impairment write-downs3true 4us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Aging of fair value and gross unrealized losses for AFS securities4false 5us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse836000000836falsefalsefalse2truefalsefalse532000000532falsefalsefalse3truefalsefalse9300000093falsefalsefalse4truefalsefalse00falsefalsefalse5truefalsefalse3500000035falsefalsefalse6truefalsefalse00falsefalsefalse7truefalsefalse3800000038falsefalsefalse8truefalsefalse00falsefalsefalse9truefalsefalse319000000319falsefalsefalse10truefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12truefalsefalse00falsefalsefalse13truefalsefalse270000000270falsefalsefalse14truefalsefalse00falsefalsefalse15truefalsefalse00falsefalsefalse16truefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19truefalsefalse00falsefalsefalse20truefalsefalse532000000532falsefalsefalse21truefalsefalse2900000029falsefalsefalse22truefalsefalse5200000052falsefalsefalse23truefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(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. false2Less than 12 months, fair value5false 5us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00falsefalsefalse2truefalsefalse116000000116falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(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. false212 months or more, fair value6false 5us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-31000000-31falsefalsefalse2truefalsefalse-12000000-12falsefalsefalse3truefalsefalse-4000000-4falsefalsefalse4truefalsefalse00falsefalsefalse5truefalsefalse-1000000-1falsefalsefalse6truefalsefalse00falsefalsefalse7truefalsefalse-1000000-1falsefalsefalse8truefalsefalse00falsefalsefalse9truefalsefalse-5000000-5falsefalsefalse10truefalsefalse00falsefalsefalse11truefalsefalse00falsefalsefalse12truefalsefalse00falsefalsefalse13truefalsefalse-16000000-16falsefalsefalse14truefalsefalse00falsefalsefalse15truefalsefalse00falsefalsefalse16truefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19truefalsefalse00falsefalsefalse20truefalsefalse-12000000-12falsefalsefalse21truefalsefalse-2000000-2falsefalsefalse22truefalsefalse-2000000-2falsefalsefalse23truefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for securities categorized neither as held-to-maturity nor trading securities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563 false2Less than 12 months, unrealized losses7false 5us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00USD$falsetruefalse2truefalsefalse30000003USD$falsetruefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for securities which are categorized neither as held-to-maturity nor trading securities.No definition available.false212 months or more, unrealized lossesfalseInvestments in Marketable Securities (Realized and Unrealized Losses) (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.toyotafinancial.com/role/DisclosureInvestmentsInMarketableSecuritiesRealizedAndUnrealizedLossesDetails237