Summary of Significant Accounting Policies (Policies)	3 Months Ended
Sep. 30, 2012
Summary of Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The information furnished in these unaudited interim financial statements for the three and six months ended September 30, 2012 and 2011 has been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). In the opinion of management, the unaudited financial information reflects all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the interim periods presented. The results of operations for the three and six months ended September 30, 2012 do not necessarily indicate the results which may be expected for the full fiscal year ended March 31, 2013 (“fiscal 2013”). These financial statements should be read in conjunction with the Consolidated Financial Statements, significant accounting policies, and other notes to the Consolidated Financial Statements included in Toyota Motor Credit Corporation's Annual Report on Form 10-K (“Form 10-K”) for the fiscal year ended March 31, 2012 (“fiscal 2012”), which was filed with the Securities and Exchange Commission (“SEC”) on June 6, 2012. References herein to “TMCC” denote Toyota Motor Credit Corporation, and references herein to “we”, “our”, and “us” denote Toyota Motor Credit Corporation and its consolidated subsidiaries. Certain prior period amounts have been reclassified to conform to the current period presentation. Related party transactions presented in the Consolidated Financial Statements are disclosed in Note 14 – Related Party Transactions of the Notes to Consolidated Financial Statements
New Accounting Guidance	New Accounting Guidance In December 2011, the Financial Accounting Standards Board (“FASB”) issued accounting guidance on the disclosure about offsetting assets and liabilities. The disclosure requirements of this guidance are intended to help investors and other financial statement users to better assess the effect or potential effect of offsetting arrangements on a company's financial position. Offsetting, otherwise known as netting, is the presentation of assets and liabilities as a single net amount in the balance sheet. The guidance retains the current U.S. GAAP model that allows companies the option to present net in their balance sheets derivatives that are subject to a legally enforceable netting arrangement with the same party, where rights of set-off are available, including in the event of default or bankruptcy. However, the guidance adds new disclosure requirements to improve transparency in the reporting of how companies mitigate credit risk, including disclosure of related collateral pledged or received. The accounting guidance is effective for us on April 1, 2013. We are evaluating the effect that adoption of this guidance will have on our consolidated financial statements.
Recently Adopted Accounting Guidance	Recently Adopted Accounting Guidance In April 2012, we adopted new FASB accounting guidance which requires entities to report components of comprehensive income in either a single continuous statement of comprehensive income or two separate but consecutive statements. We have elected to present comprehensive income in two separate but consecutive statements. The application of this guidance primarily affected the presentation of our consolidated financial statements.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Sep. 30, 2012

Summary of Significant Accounting Policies [Abstract]

The information furnished in these unaudited interim financial statements for the three and six months ended September 30, 2012 and 2011 has been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). In the opinion of management, the unaudited financial information reflects all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the interim periods presented. The results of operations for the three and six months ended September 30, 2012 do not necessarily indicate the results which may be expected for the full fiscal year ended March 31, 2013 (“fiscal 2013”).

These financial statements should be read in conjunction with the Consolidated Financial Statements, significant accounting policies, and other notes to the Consolidated Financial Statements included in Toyota Motor Credit Corporation's Annual Report on Form 10-K (“Form 10-K”) for the fiscal year ended March 31, 2012 (“fiscal 2012”), which was filed with the Securities and Exchange Commission (“SEC”) on June 6, 2012. References herein to “TMCC” denote Toyota Motor Credit Corporation, and references herein to “we”, “our”, and “us” denote Toyota Motor Credit Corporation and its consolidated subsidiaries.

Certain prior period amounts have been reclassified to conform to the current period presentation. Related party transactions presented in the Consolidated Financial Statements are disclosed in Note 14 – Related Party Transactions of the Notes to Consolidated Financial Statements

New Accounting Guidance

In December 2011, the Financial Accounting Standards Board (“FASB”) issued accounting guidance on the disclosure about offsetting assets and liabilities. The disclosure requirements of this guidance are intended to help investors and other financial statement users to better assess the effect or potential effect of offsetting arrangements on a company's financial position. Offsetting, otherwise known as netting, is the presentation of assets and liabilities as a single net amount in the balance sheet. The guidance retains the current U.S. GAAP model that allows companies the option to present net in their balance sheets derivatives that are subject to a legally enforceable netting arrangement with the same party, where rights of set-off are available, including in the event of default or bankruptcy. However, the guidance adds new disclosure requirements to improve transparency in the reporting of how companies mitigate credit risk, including disclosure of related collateral pledged or received. The accounting guidance is effective for us on April 1, 2013. We are evaluating the effect that adoption of this guidance will have on our consolidated financial statements.

Recently Adopted Accounting Guidance

In April 2012, we adopted new FASB accounting guidance which requires entities to report components of comprehensive income in either a single continuous statement of comprehensive income or two separate but consecutive statements. We have elected to present comprehensive income in two separate but consecutive statements. The application of this guidance primarily affected the presentation of our consolidated financial statements.