CONSOLIDATED STATEMENT OF SHAREHOLDER'S EQUITY (PARENTHETICALS) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Statement Of Stockholders Equity Abstract
Tax Provision (Benefit) On Net Unrealized Gain Loss On Available For Sale Marketable Securities ($9 million benefit for Dec. 2010 and $7 million benefit for Dec. 2011)	$ (7)	$ (9)
Tax Provision (Benefit) On Reclassification Adjustment For Net Gain Loss On Available-For-Sale Securities, Included In Net Income ($1 million provision for Dec. 2010 & $10 million benefit for Dec. 2011)	$ (10)	$ 1

Definition:The change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity during the period

No definition available.

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