Recorded investment of impaired financing receivables aggregated and evaluated for impairment.

No definition available.

Name:	tmcc_ImpairedFinancingReceivableRecordedInvestmentAccountBalancesAggregatedAndEvaluatedForImpairment
Namespace Prefix:	tmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

Name:	us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_FinanceReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Allowance for Credit Losses - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Financing Receivable Allowance For Credit Losses [Line Items]
Recoveries from credit loss charge-offs	$ 86	$ 85	$ 87
Impaired Finance Receivables Aggregated And Evaluated For Impairment	264	323
Finance Receivables, Net [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: Collectively evaluated for impairment	66,207	65,566
Finance Receivables, Net [Member] \| Retail Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Finance Receivables Aggregated And Evaluated For Impairment	264	322
Ending balance: Collectively evaluated for impairment	50,302	49,410
Finance Receivables, Net [Member] \| Dealer Products [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: Collectively evaluated for impairment	15,384	15,717
Finance Receivables, Net [Member] \| Commercial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Finance Receivables Aggregated And Evaluated For Impairment		1
Ending balance: Collectively evaluated for impairment	521	439
Finance Receivables, Net [Member] \| TMS [Member] \| Financial Guarantee [Member] \| Dealer Products [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: Collectively evaluated for impairment	917	836
Finance Receivables, Net [Member] \| Private Toyota Distributors [Member] \| Financial Guarantee [Member] \| Dealer Products [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: Collectively evaluated for impairment	$ 122	$ 144