Entity Central Index Key Impact of offsetting the fair value amounts of derivative assets executed with the same counterparty under the same master netting agreement. Impact of offsetting the fair value amounts of derivative liabilities executed with the same counterparty under the same master netting agreement. Financing revenues net of interest expense. Aggregate amount of financing revenues from operating lease payments and interest income from financing after deducting depreciation on leases and interest expense, insurance premium earned and insurance contract fees and commissions, investment income and other revenues not separately reported on the consolidated statement of income. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Current Fiscal Year End Date Current Fiscal Year End Date Trading Symbol Trading Symbol Entity Filer Category Entity Filer Category Entity Well Known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Common Stock Shares Outstanding Entity Common Stock Shares Outstanding Entity Public Float Entity Public Float Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Income Statement [Abstract] Financing revenues: Revenues [Abstract] Operating lease Operating Leases Income Statement Lease Revenue Retail Interest And Fee Income Loans Consumer Installment Automobiles Marine And Other Vehicles Dealer Interest And Fee Income Loans Commercial Total financing revenues Interest And Fee Income Loans And Leases Held In Portfolio Depreciation on operating leases Operating Leases Income Statement Depreciation Expense On Property Subject To Or Held For Lease Interest expense Interest Expense Net financing revenues Financing Revenues Net Of Interest Expense Insurance earned premiums and contract revenues Insurance Services Revenue Investment and other income, net Net Investment Income Net financing revenues and other revenues Net Financing And Other Revenues Expenses: Operating Expenses [Abstract] Provision for credit losses Provision For Loan And Lease Losses Operating and administrative General And Administrative Expense Insurance losses and loss adjustment expenses Policyholder Benefits And Claims Incurred Net Total expenses Costs And Expenses Income before income taxes Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Provision (benefit) for income taxes Income Tax Expense Benefit Net income Net Income Loss Statement Of Income And Comprehensive Income [Abstract] Net income Other comprehensive income (loss), net of tax: Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Net unrealized gains (losses) on available-for-sale marketable securities [net of tax (provision) benefit of ($5), $6 and $0, respectively] Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Reclassification adjustment for net losses (gains) on available-for-sale marketable securities included in investment and other income, net [net of tax (benefit) provision of ($3), $16 and $87, respectively] Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Net Of Tax Other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Comprehensive income Comprehensive Income Net Of Tax Net unrealized gains (losses) on available-for-sale marketable securities, tax (provision) benefit Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax Reclassification adjustment for net losses (gains) on available-for-sale marketable securities included in investment and other income, tax (benefit) provision Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Tax Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Restricted cash and cash equivalents Restricted Cash And Cash Equivalents At Carrying Value Investments in marketable securities Marketable Securities Finance receivables, net Notes Receivable Net Investments in operating leases, net Property Subject To Or Available For Operating Lease Net Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDER’S EQUITY Liabilities And Stockholders Equity [Abstract] Debt Debt Longterm And Shortterm Combined Amount Deferred income taxes Deferred Tax Liabilities Other liabilities Other Liabilities Total liabilities Liabilities Commitments and contingencies (Refer to Note 11) Commitments And Contingencies Shareholder’s equity: Stockholders Equity [Abstract] Capital stock, no par value (100,000 shares authorized; 91,500 issued and outstanding) at March 31, 2019 and 2018 Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income Loss Net Of Tax Retained earnings Retained Earnings Accumulated Deficit Total shareholder's equity Stockholders Equity Total liabilities and shareholder's equity Liabilities And Stockholders Equity Common Stock, Par or Stated Value Per Share Common Stock No Par Value Common Stock, Shares Authorized Common Stock Shares Authorized Common Stock, Shares, Issued Common Stock Shares Issued Common Stock, Shares, Outstanding Common Stock Shares Outstanding Statement [Table] Statement [Table] Variable Interest Entities Variable Interest Entities By Classification Of Entity [Axis] Variable Interest Entity, Classification Classification Of Variable Interest Entity [Domain] Variable Interest Entity, Primary Beneficiary Variable Interest Entity Primary Beneficiary [Member] Statement [Line Items] Statement [Line Items] LIABILITIES Liabilities [Abstract] Statement Of Stockholders Equity [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Capital stock Common Stock [Member] Additional paid-in capital Additional Paid In Capital [Member] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income [Member] Retained earnings Retained Earnings [Member] Balance Cumulative-effect of change in accounting policy Cumulative Effect On Retained Earnings Net Of Tax1 Net income Other comprehensive income (loss), net of tax Dividends, net of tax Dividends Common Stock Balance The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method. The payment or receipt during the reporting period to wholesale and certain working capital receivables. The net cash inflow (outflow) from the collection of money previously advanced to an entity that is related to it but not strictly controlled and outflow from advancing money to an affiliate (an entity that is related but not strictly controlled by the entity). The amounts netted are of a short term nature. Net cash inflow (outflow) from an entity that is affiliated with the entity by means of direct or indirect ownership and distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. The amounts netted are of a short term nature. Statement Of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities [Abstract] Net income Profit Loss Adjustments to reconcile net income to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation and amortization Depreciation Amortization And Accretion Net Recognition of deferred income Recognition Of Deferred Income Amortization of deferred costs Amortization Of Deferred Charges Foreign currency and other adjustments to the carrying value of debt, net Foreign Currency Transaction Gain Loss Unrealized Net gains from investments in marketable securities Marketable Securities Gain Loss Net change in: Increase Decrease In Operating Capital [Abstract] Derivative assets Increase Decrease In Derivative Assets Other assets and accrued interest Increase Decrease In Other Operating Assets Deferred income taxes Increase Decrease In Deferred Income Taxes Derivative liabilities Increase Decrease In Derivative Liabilities Other liabilities Increase Decrease In Other Operating Liabilities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Cash flows from investing activities: Net Cash Provided By Used In Investing Activities [Abstract] Purchase of investments in marketable securities Payments To Acquire Available For Sale Securities Proceeds from sales of investments in marketable securities Proceeds From Sale Of Available For Sale Securities Proceeds from maturities of investments in marketable securities Proceeds From Sale And Maturity Of Available For Sale Securities Acquisition of finance receivables Payments To Acquire Finance Receivables Collection of finance receivables Proceeds From Collection Of Finance Receivables Net change in wholesale and certain working capital receivables Payments For Receipts From Wholesale And Certain Working Capital Receivables Acquisition of investments in operating leases Payments To Acquire Leases Held For Investment Disposals of investments in operating leases Proceeds From Leases Held For Investment Long term loans to affiliates Payments To Fund Longterm Loans To Related Parties Payments on long term loans from affiliates Proceeds From Collection Of Longterm Loans To Related Parties Net change in financing support provided to affiliates Proceeds From Collection Of Advance To Affiliate And Payments For Advance To Affiliate Net Other, net Payments For Proceeds From Other Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities Cash flows from financing activities: Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from issuance of debt Proceeds From Issuance Of Debt Payments on debt Repayments Of Debt Net change in commercial paper Proceeds From Repayments Of Commercial Paper Net change in financing support provided by affiliates Proceeds From Contributions From Affiliates And Payments Of Distributions To Affiliates Net Net cash (used in) provided by financing activities Net Cash Provided By Used In Financing Activities Net (decrease) increase in cash and cash equivalents and restricted cash and cash equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents and restricted cash and cash equivalents at the beginning of the period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents and restricted cash and cash equivalents at the end of the period Supplemental disclosures: Supplemental Cash Flow Information [Abstract] Interest paid, net Interest Paid Net Income taxes paid, net Income Taxes Paid Net Accounting Policies [Abstract] Basis of Presentation and Significant Accounting Policies Basis Of Presentation And Significant Accounting Policies [Text Block] Marketable Securities [Abstract] Cash and Cash Equivalents and Investments in Marketable Securities Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] Receivables [Abstract] Finance Receivables, Net Financing Receivables [Text Block] Leases Operating [Abstract] Investments in Operating Leases, Net Operating Leases Of Lessor Disclosure [Text Block] Loans And Leases Receivable Disclosure [Abstract] Allowance for Credit Losses Allowance For Credit Losses [Text Block] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivatives, Hedging Activities and Interest Expense Derivative Instruments And Hedging Activities Disclosure [Text Block] Debt Disclosure [Abstract] Debt and Credit Facilities Debt Disclosure [Text Block] Variable Interest Entity Consolidated Carrying Amount Assets And Liabilities [Abstract] Variable Interest Entities Variable Interest Entity Disclosure [Text Block] General Discussion Of Pension And Other Postretirement Benefits [Abstract] Pension and Other Benefits Pension And Other Postretirement Benefits Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Segment Reporting [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Quarterly Financial Information Disclosure [Abstract] Selected Quarterly Financial Data Quarterly Financial Information [Text Block] Basis of presentation and principles of consolidation, policy. Basis of Presentation and Principles of Consolidation Basis Of Presentation And Principles Of Consolidation Policy Policy [Text Block] Use of Estimates Use Of Estimates Disclosure of accounting principles that are recently adopted by the entity. Recently Adopted Accounting Guidance Recently Adopted Accounting Pronouncements Policy [Text Block] Accounting guidance issued but not yet adopted. New Accounting Guidance Accounting Guidance Issued But Not Yet Adopted Policy [Text Block] Cash and Cash Equivalents Cash And Cash Equivalents Unrestricted Cash And Cash Equivalents Policy Restricted Cash and Cash Equivalents Cash And Cash Equivalents Restricted Cash And Cash Equivalents Policy Investments in Marketable Securities Marketable Securities Policy Finance Receivables Receivables Policy [Text Block] Investments in Operating Leases Lessee Leases Policy [Text Block] Disclosure of methods used to record depreciation on operating leases. Depreciation on Operating Leases Depreciation On Operating Leases Policy [Text Block] Allowance for Credit Losses Financing Receivable Allowance For Credit Losses Policy Or Methodology Change Policy [Text Block] Derivative Instruments Derivatives Policy [Text Block] Debt Issuance Costs Debt Policy [Text Block] Foreign Currency Transactions Foreign Currency Transactions And Translations Policy [Text Block] Variable Interest Entities Consolidation Variable Interest Entity Policy Income Taxes Income Tax Policy [Text Block] Fair Value Measurements Fair Value Of Financial Instruments Policy Revenue Recognition Revenue Recognition Policy [Text Block] Policy related to recording insurance loss reserves and related expenses. Insurance Losses and Loss Adjustment Expenses Insurance Losses And Loss Expenses Policy [Text Block] Disclosure of accounting policy for risk transfer. Includes, but is not limited to, description of the methodologies and assumptions underlying determination of risk transfer recoverable, risk transfer payables, and retention policy. Risk Transfer Risk Transfer Accounting Policy Policy [Text Block] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption Type Of Adoption [Member] Accounting Standards Update 2014-09 [Member] Accounting Standards Update201409 [Member] Schedule of Cumulative Effect and Impact on Consolidated Balance Sheet for Adoption Schedule Of New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Summary of Investments in Marketable Securities Available For Sale Securities [Text Block] Schedule of Gains and Losses on Investments in Marketable Securities Presented in Our Consolidated Statement of Income Schedule Of Realized Gain Loss Table [Text Block] Summary of Contractual Maturities of Available-For-Sale Debt Securities Investments Classified By Contractual Maturity Date Table [Text Block] Net Financing Receivables Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Contractual maturities on retail receivables and dealer financing. Contractual Maturities on Retail Receivables and Dealer Financing Finance Receivables Classified By Contractual Maturity Date Table [Text Block] Finance Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators Table [Text Block] Tabular disclosure of the aging of financing receivables by class. Past Due Finance Receivables by Class Schedule Of Financing Receivable By Class Table [Text Block] Summary of Impaired Loans by Class of Finance Receivable Impaired Financing Receivables Table [Text Block] Investments in Operating Leases, Net Schedule Of Property Subject To Or Available For Operating Lease [Text Block] Tabular disclosure of future minimum rentals receivables in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future as of the balance sheet date. Future Minimum Rentals on Investments in Operating Leases Schedule Of Future Minimum Lease Rentals Receivables For Operating Leases Table [Text Block] Tabular disclosure of reconciliation of allowance for loan and lease losses for the beginning of a period to the end of a period. Allowance for Credit Losses on Finance Receivables and Investments in Operating Leases Allowance For Loan And Lease Losses Roll Forward Table [Text Block] Allowance for Credit Losses and Finance Receivables by Portfolio Segment Allowance For Credit Losses On Financing Receivables Table [Text Block] Derivative Activity Impact on Consolidated Balance Sheet Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block] Components of Interest Expense Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance [Text Block] Debt and Related Weighted Average Contractual Interest Rates Schedule Of Debt Table [Text Block] Schedule of Maturities of Long-term Debt Schedule Of Maturities Of Long Term Debt Table [Text Block] Schedule of Variable Interest Entities, Securitization Transactions Assets and Liabilities Schedule Of Variable Interest Entities [Text Block] Provision (benefit) for Income Taxes Schedule Of Components Of Income Tax Expense Benefit Table [Text Block] Reconciliation Between U.S. Federal Statutory Tax Rate and Effective Tax Rate Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block] Deferred Tax Liabilities and Assets Schedule Of Deferred Tax Assets And Liabilities Table [Text Block] A listing of commitments and guarantees with the pertinent maximum amounts as agreed to. Commitments and Guarantees Commitments And Guarantees Table [Text Block] Future Minimum Lease Payments under Non-cancelable Operating Leases Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] Tabular disclosure of related party transactions that are included in Income Statement. Related Party Transactions Included in Consolidated Statements of Income Related Party Transactions Included In Income Statement Table [Text Block] Tabular disclosure of related party transactions that are included in Statement of Financial Position. Related Party Transactions Included in Consolidated Balance Sheets Related Party Transactions Included In Statement Of Financial Position Table [Text Block] Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Tabular disclosure of the fair value measurement of total net assets (liabilities) using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset and liability. Assets and Liabilities Measured on Recurring Basis Using Significant Unobservable Inputs Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] Financial Assets and Liabilities Not Carried at Fair Value on Recurring Basis on Consolidated Balance Sheets Fair Value By Balance Sheet Grouping [Text Block] Schedule of Segment Reporting Information, by Segment Schedule Of Segment Reporting Information By Segment [Text Block] Selected Quarterly Financial Data Schedule Of Quarterly Financial Information Table [Text Block] Summary of significant accounting policies. Summary of significant accounting policies. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Concentration Risk Type Concentration Risk By Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Geographic Concentration Risk [Member] Geographic Concentration Risk [Member] Concentration Risk Benchmark Concentration Risk By Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Sales Revenue, Net [Member] Sales Revenue Net [Member] Segments Statement Business Segments [Axis] Segments Segment [Domain] Finance operations include retail installment sales, leasing, and dealer financing provided to authorized vehicle and industrial equipment dealers and their customers in the U.S. and Puerto Rico. Finance Operations [Member] Finance Operations [Member] Insurance operations are performed by TMIS and its subsidiaries. The principal activities of TMIS include marketing, underwriting, claims administration related to providing various levels and types of coverage to Toyota and Lexus vehicle dealers and their customers. Insurance Operations [Member] Insurance Operations [Member] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] California [Member] CALIFORNIA Texas [Member] TEXAS New York [Member] NEW YORK New Jersey [Member] NEW JERSEY Maryland [Member] MARYLAND Virginia [Member] VIRGINIA Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Restatement Restatement [Axis] Restatement Restatement [Domain] Adjustments Related to Adoption [Member] Difference Between Revenue Guidance In Effect Before And After Topic606 [Member] Accounting Standards Update 2016-01 [Member] Accounting Standards Update201601 [Member] Prospective Adoption of New Accounting Pronouncements Prospective Adoption Of New Accounting Pronouncements [Axis] Accounting Guidance Accounting Guidance [Member] Accounting Standards Update 2016-02 [Member] Accounting Standards Update201602 [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Concentration Percentage Concentration Risk Percentage1 Restructuring and related activities, description Restructuring And Related Activities Description Initial Application Period Cumulative Effect Transition Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition Initial Application Period Cumulative Effect Transition [Domain] Balances without Adoption [Member] Calculated Under Revenue Guidance In Effect Before Topic606 [Member] Cumulative effect of adoption of the guidance, reduction in retained earnings Cumulative Effect Of New Accounting Principle In Period Of Adoption Operating lease right-of-use assets Operating Lease Right Of Use Asset Operating lease liabilities Operating Lease Liability Marketable securities amortized cost. Marketable securities unrealized gain. Marketable securities unrealized loss. Schedule of Available-for-sale Securities [Line Items] Schedule Of Available For Sale Securities [Table] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] U.S. government and agency obligations [Member] U S Treasury And Government [Member] Municipal debt securities [Member] U S States And Political Subdivisions [Member] Certificates of deposit [Member] Certificates Of Deposit [Member] Commercial paper [Member] Commercial Paper [Member] Corporate debt securities [Member] Corporate Debt Securities [Member] U.S. government agency mortgage-backed securities [Member] Mortgage Backed Securities Issued By U S Government Sponsored Enterprises [Member] Non-agency residential mortgage-backed securities [Member] Residential Mortgage Backed Securities [Member] Non-agency commercial mortgage-backed securities [Member] Commercial Mortgage Backed Securities [Member] Asset-backed securities [Member] Asset Backed Securities Securitized Loans And Receivables [Member] Schedule of Available-for-sale Securities [Line Items] Schedule Of Available For Sale Securities [Line Items] Available-for-sale debt securities, Amortized cost Available For Sale Debt Securities Amortized Cost Basis Available-for-sale debt securities, Unrealized gains Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Available-for-sale debt securities, Unrealized losses Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax Available-for-sale debt securities, Fair value Available For Sale Securities Debt Securities Equity investments, Amortized cost Equity Securities Fv Ni Cost Equity investments, Unrealized gains Equity Securities Fv Ni Unrealized Gain Equity investments, Unrealized losses Equity Securities Fv Ni Unrealized Loss Equity investments, Fair value Equity Securities Fv Ni Total investments in marketable securities, Amortized cost Marketable Securities Amortized Cost Total investments in marketable securities, Unrealized gain Marketable Securities Unrealized Gain Total investments in marketable securities, Unrealized losses Marketable Securities Unrealized Loss Available for sale maximum securities share redemption percentage. Available for sale maximum securities share redemption amount. Available for sale maximum securities share redemption time period; day limit on repurchases after redemption. Private placement share redemption percentage Available For Sale Maximum Securities Share Redemption Percentage Private placement share redemption amount Available For Sale Maximum Securities Share Redemption Amount Share redemption period Available For Sale Maximum Securities Share Redemption Time Period Available-for-sale securities: Debt Securities Available For Sale Gain Loss [Abstract] Realized (losses) gains Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment Equity investments: Equity Securities Fv Ni Gain Loss [Abstract] Unrealized gains recognized Equity Securities Fv Ni Unrealized Gain Loss Available-for-sale debt securities, Amortized Cost Available For Sale Securities Debt Maturities Amortized Cost [Abstract] Due within 1 Year, Amortized Cost Available For Sale Securities Debt Maturities Within One Year Amortized Cost Due after 1 Year through 5 Years, Amortized Cost Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost Due after 5 Years through 10 Years, Amortized Cost Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost Due after 10 Years, Amortized Cost Available For Sale Securities Debt Maturities After Ten Years Amortized Cost Mortgage-backed and asset-backed securities, Amortized Cost Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost Available-for-sale debt securities, Fair Value Available For Sale Securities Debt Maturities Fair Value [Abstract] Due within 1 Year, Fair Value Available For Sale Securities Debt Maturities Within One Year Fair Value Due after 1 Year through 5 Years, Fair Value Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Due after 5 Years through 10 Years, Fair Value Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Due after 10 Years, Fair Value Available For Sale Securities Debt Maturities After Ten Years Fair Value Mortgage-backed and asset-backed securities, Fair Value Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value Total, Fair Value For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the acquisition of finance receivable (for example, legal, accounting, underwriting and printing costs) that will be charged against earnings over the life of the finance receivables to which such costs pertain. Reflects the cumulative amount of interest and fees paid by borrowers which have not yet been taken into income in conformity with GAAP. The amount is being amortized into income as an adjustment to yield. Schedule Of Accounts Notes Loans And Financing Receivable [Table] Schedule Of Accounts Notes Loans And Financing Receivable [Table] Receivable Type Accounts Notes Loans And Financing Receivable By Receivable Type [Axis] Receivable Receivable Type [Domain] Finance Receivables, Net [Member] Finance Receivables [Member] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Retail loan receivables excluding pledged ones. Retail receivables [Member] Retail Receivables Excluding Pledged Receivables [Member] Securitized receivables represent retail loan receivables that have been sold for legal purposes to securitization trusts, but continue to be included in the company's consolidated financial statements. Securitized retail receivables [Member] Securitized Retail Receivables [Member] Dealer financing is comprised of wholesale financing and other financing options designed to meet dealer business needs. Dealer financing [Member] Dealer Financing [Member] Retail loans receivables, including securitized retail receivables. Retail and securitized retail receivables [Member] Retail And Securitized Retail Receivables [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Notes And Loans Receivable [Line Items] Gross finance receivables Notes Receivable Gross Deferred origination (fees) and costs, net Deferred Origination Costs Deferred income Unearned Income Allowance for credit losses Financing Receivable Allowance For Credit Losses Finance receivables, net Receivables to customers expected to be collected within one year from the balance sheet date. Receivables to customers expected to be collected in less than two years but greater than one year from the balance sheet date. Receivables to customers expected to be collected in less than three years but greater than two years from the balance sheet date. Receivables to customers expected to be collected in less than four years but greater than three years from the balance sheet date. Receivables to customers expected to be collected in less than five years but greater than four years from the balance sheet date. Receivables to customers expected to be collected in or after five years from the balance sheet date. Notes receivables excluding estimated unguaranteed residual values in direct financing lease. Retail loan receivables. Retail receivables [Member] Retail Receivables [Member] 2020 Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Maturities Within One Year 2021 Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Maturities Within Two Years 2022 Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Maturities Within Three Years 2023 Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Maturities Within Four Years 2024 Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Maturities Within Five Years Thereafter Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Maturities Five Years Thereafter Total Notes Receivable Excluding Direct Financing Lease Estimated Unguaranteed Residual Values Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table] Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table] Financing Receivables, Period Past Due Financing Receivables Period Past Due [Axis] Financing Receivables, Period Past Due Financing Receivables Period Past Due [Domain] 30-59 Days Past Due [Member] Financing Receivables30 To59 Days Past Due [Member] 60-89 Days Past Due [Member] Financing Receivables60 To89 Days Past Due [Member] 90 Days or Greater Past Due [Member] Financing Receivables Equal To Greater Than90 Days Past Due [Member] Class of Financing Receivable, Type Financing Receivable Recorded Investment By Class Of Financing Receivable [Axis] Class of Financing Receivable, Type Financing Receivable Recorded Investment Class Of Financing Receivable [Domain] Retail Loan [Member] Consumer Portfolio Segment [Member] Internal Credit Assessment Internal Credit Assessment [Axis] Internal Credit Assessment Internal Credit Assessment [Domain] Performing [Member] Performing Financing Receivable [Member] Credit Watch [Member] Special Mention [Member] At Risk [Member] Substandard [Member] Default [Member] Doubtful [Member] Class of financing receivables related to floor plan financing. Wholesale [Member] Wholesale Loan Financing Receivable [Member] Class of financing receivables related to real estate financing receivables. Real estate [Member] Real Estate Financing Receivable [Member] Class of financing receivables related to working capital financing. Working capital [Member] Working Capital Financing Receivable [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable Recorded Investment [Line Items] Current Financing Receivable Recorded Investment Current Financing receivables, past due Financing Receivable Recorded Investment Past Due Total Finance Receivables Schedule Of Financing Receivables Past Due [Table] Schedule Of Financing Receivables Past Due [Table] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable Recorded Investment Past Due [Line Items] Total Past Due 90 Days or Greater Past Due and Accruing Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Recorded investment of impaired financing receivables individually evaluated for which there is a related allowance for credit losses. Recorded investment of impaired financing receivables individually evaluated for which there is no related allowance for credit losses. Recorded investment of impaired financing receivables aggregated and evaluated for impairment. Schedule Of Impaired Financing Receivable [Table] Schedule Of Impaired Financing Receivable [Table] Financing Receivable Impaired [Line Items] Financing Receivable Impaired [Line Items] Impaired Finance Receivables Impaired Financing Receivable Recorded Investment [Abstract] Impaired Finance Receivables Individually Evaluated with Related Allowance Impaired Financing Receivable Individually Evaluated With Related Allowance Recorded Investment Impaired Finance Receivables Individually Evaluated with No Related Allowance Impaired Financing Receivable Individually Evaluated With No Related Allowance Recorded Investment Impaired Finance Receivables Aggregated And Evaluated For Impairment Impaired Financing Receivable Recorded Investment Account Balances Aggregated And Evaluated For Impairment Impaired Finance Receivables Impaired Financing Receivable Recorded Investment Individually Evaluated Allowance Impaired Financing Receivable Related Allowance Dealer products portfolio segment accounts on nonaccrual status Financing Receivable Recorded Investment Nonaccrual Status Property Subject To Or Available For Operating Lease By Major Property Class [Table] Property Subject To Or Available For Operating Lease By Major Property Class [Table] Major Property Class Major Property Class [Axis] Major Property Class Major Property Class [Domain] Investments in operating leases. Investments in operating leases [Member] Investments In Operating Leases [Member] Property Subject To Or Available For Operating Lease [Line Items] Property Subject To Or Available For Operating Lease [Line Items] Impairment in investments in operating leases portfolio Impairment Of Leasehold The carrying amount as of the balance sheet date of operating lease origination costs. Amount of deferred interest and fee income, unamortized costs incurred to originate operating leases, unamortized lease commitments [and lease syndication fees], and premiums over or discounts from face amounts of acquired leases. Excludes amounts for leases covered under loss sharing agreements. Amount of allowance to cover probable credit losses on leases. Includes carryover of or adjustments to the allowance for lease losses in connection with business combinations. Excludes allowance for leases covered under loss sharing agreements. Investments in operating leases, net Investments In Operating Leases, Net [Member] Investments In Operating Leases Net [Member] Securitized property subject to or available for operating lease gross. Securitized investments in operating leases [Member] Securitized Property Subject To Or Available For Operating Lease Gross [Member] Investments in operating leases Property Subject To Or Available For Operating Lease Gross Deferred origination (fees) and costs, net Deferred Costs Operating Lease Origination Costs Amount Deferred income Deferred Income On Property Subject To Or Available For Operating Lease Accumulated depreciation Property Subject To Or Available For Operating Lease Accumulated Depreciation Allowance for credit losses Allowance For Credit Losses On Property Subject To Or Available For Operating Lease Investments in operating leases, net Future minimum rentals on operating leases Operating Leases Future Minimum Payments Receivable [Abstract] 2020 Operating Leases Future Minimum Payments Receivable Current 2021 Operating Leases Future Minimum Payments Receivable In Two Years 2022 Operating Leases Future Minimum Payments Receivable In Three Years 2023 Operating Leases Future Minimum Payments Receivable In Four Years 2024 Operating Leases Future Minimum Payments Receivable In Five Years Total Operating Leases Future Minimum Payments Receivable Allowance for Credit Losses on Finance Receivables and Investments in Operating Leases Allowance For Loan And Lease Losses Roll Forward Allowance for credit losses at beginning of period Loans And Leases Receivable Allowance Charge-offs Allowance For Loan And Lease Losses Write Offs Recoveries Allowance For Loan And Lease Loss Recovery Of Bad Debts Allowance for credit losses at end of period Allowance for credit losses for finance receivables. Allowance for loan and lease losses transferred to held for sale. Notes receivable gross. Schedule Of Financing Receivable Allowance For Credit Losses [Table] Schedule Of Financing Receivable Allowance For Credit Losses [Table] Portfolio segment of the company's total financing receivables related to vehicle and industrial equipment dealer products, such as wholesale loans (also referred to as floor plan financing), real estate loans, working capital loans and revolving lines of credits. Dealer Products [Member] Dealer Products Segment [Member] Financing Receivable Allowance For Credit Losses [Line Items] Financing Receivable Allowance For Credit Losses [Line Items] Allowance for Credit Losses for Finance Receivables: Financing Receivable Allowance For Credit Losses [Abstract] Allowance for credit losses at beginning of period Charge-offs Financing Receivable Allowance For Credit Losses Write Offs Recoveries Financing Receivable Allowance For Credit Losses Recovery Provision for credit losses Transferred to held-for-sale Allowance For Loan And Lease Losses Transferred To Held For Sale Allowance for credit losses at end of period Ending balance: Individually evaluated for impairment Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 Ending balance: Collectively evaluated for impairment Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment Finance Receivables: Notes Receivable Gross [Abstract] Ending balance: Individually evaluated for impairment Financing Receivable Individually Evaluated For Impairment Ending balance: Collectively evaluated for impairment Financing Receivable Collectively Evaluated For Impairment Related Party Related Party Transactions By Related Party [Axis] Related Party Related Party [Domain] Toyota motor North America. TMNA [Member] Toyota Motor North America [Member] Private Toyota distributors. Private Toyota Distributors [Member] Private Toyota Distributors [Member] Guarantor Obligations, Nature Guarantee Obligations By Nature [Axis] Guarantor Obligations, Nature Guarantee Obligations Nature [Domain] Financial Guarantee [Member] Financial Guarantee [Member] Consumer and commercial portfolio segment member. Retail and Commercial Loan [Member] Consumer And Commercial Portfolio Segment [Member] Impaired finance receivables aggregated and collectively evaluated for impairment Derivative assets and liabilities used for hedge accounting Derivative Instruments In Hedges At Fair Value Net Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Hedging Designation Hedging Designation [Axis] Hedging Designation Hedging Designation [Domain] Hedge accounting derivatives [Member] Designated As Hedging Instrument [Member] Non-hedge accounting derivatives [Member] Nondesignated [Member] Measurement Basis Fair Value By Measurement Basis [Axis] Fair Value Disclosure Item Amounts [Default] Portion At Fair Value Fair Value Disclosure [Member] Fair Value Measurement Fair Value Disclosure Item Amounts [Domain] Carrying value [Member] Carrying Reported Amount Fair Value Disclosure [Member] Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Other assets [Member] Other Assets [Member] Other liabilities [Member] Other Liabilities [Member] Derivative Instrument Derivative Instrument Risk [Axis] Derivative Contract Derivative Contract Type [Domain] Interest rate swaps [Member] Interest Rate Swap [Member] Interest rate floors [Member] Interest Rate Floor [Member] Foreign currency swaps [Member] Currency Swap [Member] Derivatives Fair Value [Line Items] Derivatives Fair Value [Line Items] Notional Derivative Asset Notional Amount Carrying value of derivative contracts – Other assets Derivative Assets Notional Derivative Liability Notional Amount Carrying value of derivative contracts – Other liabilities Derivative Liabilities Fair value Derivative Fair Value Of Derivative Asset Counterparty netting Counterparty Netting On Assets Collateral held Derivative Asset Collateral Obligation To Return Cash Offset Fair value Derivative Fair Value Of Derivative Liability Counterparty netting Counterparty Netting On Liabilities Collateral posted Derivative Liability Collateral Right To Reclaim Cash Offset Collateral held in excess of the fair value of derivative assets Derivative Collateral Obligation To Return Cash Collateral posted in excess of the fair value of derivative liabilities Derivative Collateral Right To Reclaim Cash Net amount of interest income (expense) on derivative activities. Net amount of interest expense on all borrowings and hedge- and non-hedge-related derivatives Derivative Instruments, Loss (Gain) [Line Items] Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Interest expense [Member] Interest Expense [Member] Derivative Instruments Gain Loss [Line Items] Derivative Instruments Gain Loss [Line Items] Interest expense on debt Interest Expense Borrowings Interest income on derivatives Interest Income Expense Derivatives Interest expense on debt and derivatives Interest Expense Borrowings And Derivatives (Gains) losses on non-hedge accounting debt denominated in foreign currencies Foreign Currency Transaction Gain Loss Before Tax Losses (gains) on non-hedge accounting foreign currency swaps Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Losses (gains) on U.S. dollar non-hedge accounting interest rate swaps Gain Loss On Interest Rate Derivative Instruments Not Designated As Hedging Instruments Total interest expense Debt Instrument [Table] Debt Instrument [Table] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Unsecured notes and loans payable [Member] Unsecured Debt [Member] Secured notes and loans payable [Member] Secured Debt [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt, Face Value Debt Instrument Face Amount Debt, Carrying Value Weighted average contractual interest rates Debt Weighted Average Interest Rate Scheduled maturities due in the fiscal years ending: Long Term Debt By Maturity [Abstract] 2020 Long Term Debt Maturities Repayments Of Principal In Next Twelve Months 2021 Long Term Debt Maturities Repayments Of Principal In Year Two 2022 Long Term Debt Maturities Repayments Of Principal In Year Three 2023 Long Term Debt Maturities Repayments Of Principal In Year Four 2024 Long Term Debt Maturities Repayments Of Principal In Year Five Thereafter Long Term Debt Maturities Repayments Of Principal After Year Five Unamortized premiums, discounts and debt issuance costs Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Total debt Commercial paper outstanding Commercial Paper Line Of Credit Facility [Table] Line Of Credit Facility [Table] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] A 364-day syndicated credit facility, which provides the company the ability to make cash borrowings. This credit facility expires in 2020. 364 Day Credit Agreement Expiring 2020 [Member] Three Hundred Sixty Four Day Syndicated Bank Credit Facility Expiring2020 [Member] Three year syndicated bank credit facility expiring 2022. Three Year Agreement Expiring 2022 [Member] Three Year Syndicated Bank Credit Facility Expiring2022 [Member] Five year syndicated bank credit facility expiring 2024. Five Year Agreement Expiring 2024 [Member] Five Year Syndicated Bank Credit Facility Expiring2024 [Member] Total Committed bank credit facilities Total Committed Bank Credit Facilities [Member] Committed Bank Credit Facilities [Member] Committed bank credit expiring 2020. Committed Bank Credit Facility Expiring 2020 [Member] Committed Bank Credit Expiring2020 [Member] Committed bank credit expiring 2021. Committed Bank Credit Facility Expiring 2021 [Member] Committed Bank Credit Expiring2021 [Member] Committed bank credit expiring 2022. Committed Bank Credit Facility Expiring 2022 [Member] Committed Bank Credit Expiring2022 [Member] Three year revolving credit facility expiring 2022. Three Year Revolving Credit Facility Expiring 2022 [Member] Three Year Revolving Credit Facility Expiring2022 [Member] Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Initiation date Line Of Credit Facility Initiation Date1 Maximum borrowing capacity Line Of Credit Facility Maximum Borrowing Capacity Credit facilities amount outstanding Line Of Credit Schedule Of Variable Interest Entities [Table] Schedule Of Variable Interest Entities [Table] Retail loans receivables pertaining to the variable interest entity. These securitization-related receivables are included in the reporting entity's consolidated statement of financial position. Retail Finance Receivables [Member] Retail Finance Receivables [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Restricted Cash Gross Securitized Assets Loans And Leases Receivable Gross Carrying Amount Net Securitized Assets Other Assets The amount of securities retained by the reporting entity in the consolidated Variable Interest Entity's debt obligations collateralized by finance receivables. Securities retained by TMCC Variable Interest Entity Consolidated Carrying Amount Secured Debt Amount Retained By Reporting Entity Benefits payable under the non-contributory defined benefit pension plan are based, generally, upon the years of credited service of employees up to a maximum number of years. Benefits payable under defined benefit plan based upon the employees' years of credited services with the highest average compensation for a given number of consecutive month period. Last applicable period of employment. Schedule Of Defined Benefit Plans Disclosures [Table] Schedule Of Defined Benefit Plans Disclosures [Table] Retirement Plan Type Retirement Plan Type [Axis] Retirement Plan Type Retirement Plan Type [Domain] Defined Benefit Plan [Member] Pension Plans Defined Benefit [Member] Retirement Plan Name Retirement Plan Name [Axis] Retirement Plan Name Retirement Plan Name [Domain] Defined contribution plan. Defined Contribution Plan [Member] Defined Contribution Plan [Member] Other Post-employment Benefits [Member] Other Postretirement Benefit Plans Defined Benefit [Member] Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Defined Benefit Plan Disclosure [Line Items] Vesting period Deferred Compensation Arrangement With Individual Requisite Service Period1 Maximum employee credited service years Employee Maximum Credited Service Term Highest average compensation consecutive number of months Highest Average Compensation Consecutive Term The last applicable months of employment Last Applicable Period Of Employment Minimum percentage of employee gross pay the employee may contribute to a defined contribution plan. Defined contribution plan employer matching contribution percent of contributions per employee. Defined contribution plan employees contribution vested percentage. Annual minimum contribution percentage by employee Defined Contribution Plan Minimum Annual Contributions Per Employee Percent Annual maximum contribution percentage by employee Defined Contribution Plan Maximum Annual Contributions Per Employee Percent Employer matching contribution percentage Defined Contribution Plan Employer Matching Contribution Percent Of Match Employer matching contribution of contribution percentage per employee Defined Contribution Plan Employer Matching Contribution Percent Of Contributions Per Employee Maximum annual employer contribution percentage per employee Defined Contribution Plan Employer Matching Contribution Percent Employees contribution vested percentage Defined Contribution Plan Employees Contribution Vested Percentage Employer matching contribution, annual vesting percentage Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage The minimum age requirement for an employee to be eligible for post-employment benefits. Employee minimum age eligibility for post employment benefits Employee Minimum Age Eligibility For Post Employment Benefits Current Current Income Tax Expense Benefit Continuing Operations [Abstract] Federal Current Federal Tax Expense Benefit State Current State And Local Tax Expense Benefit Foreign Current Foreign Tax Expense Benefit Total Current Income Tax Expense Benefit Deferred Deferred Income Tax Expense Benefit Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense Benefit State Deferred State And Local Income Tax Expense Benefit Foreign Deferred Foreign Income Tax Expense Benefit Total Deferred Income Tax Expense Benefit Provision (benefit) for income taxes Effective income tax rate reconciliation, tax loss carryback. Effective income tax rate reconciliation effect of state tax law changes. Reconciliation Between U.S. Federal Statutory Tax Rate and Effective Tax Rate Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract] Provision for income taxes at U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate State and local taxes (net of federal tax benefit) Effective Income Tax Rate Reconciliation State And Local Income Taxes Revaluation of federal deferred tax liability from TCJA Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate Tax rate differential from tax loss carryback Effective Income Tax Rate Reconciliation Tax Loss Carryback Adjustment for prior year provision to return differences Effective Income Tax Rate Reconciliation Prior Year Income Taxes Effect of state tax law changes Effective Income Tax Rate Reconciliation Effect Of State Tax Law Changes Other, net Effective Income Tax Rate Reconciliation Other Adjustments Effective tax rate Effective Income Tax Rate Continuing Operations Income tax disclosure. Income tax disclosure. Income Tax Disclosure [Table] Income Tax Disclosure [Table] Income Tax Authority Income Tax Authority [Axis] Income Tax Authority Income Tax Authority [Domain] State [Member] State And Local Jurisdiction [Member] Income Tax Authority, Name Income Tax Authority Name [Axis] Income Tax Authority, Name Income Tax Authority Name [Domain] Federal [Member] Internal Revenue Service I R S [Member] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Provision for income taxes at U.S. federal statutory tax rate Income tax benefit attributable to revaluation of net deferred tax liabilities Income Tax Reconciliation Change In Enacted Tax Rate Deferred tax liabilities state taxes, net of federal tax benefit. The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. And the The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. Liabilities: Components Of Deferred Tax Liabilities [Abstract] Lease transactions Deferred Tax Liabilities Leasing Arrangements State taxes, net of federal tax benefit Deferred Tax Liabilities State Taxes Net Of Federal Tax Benefit Mark-to-market of investments in marketable securities and derivatives Deferred Tax Liabilities Investments Other Deferred Tax Liabilities Other Deferred tax liabilities Deferred Income Tax Liabilities Assets: Components Of Deferred Tax Assets [Abstract] Provision for credit and residual value losses Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses Deferred costs and fees Deferred Tax Assets Tax Deferred Expense Net operating loss and tax credit carryforwards Deferred Tax Assets Operating Loss And Tax Credit Carryforwards Other Deferred Tax Assets Other Deferred tax assets Deferred Tax Assets Gross Valuation allowance Deferred Tax Assets Valuation Allowance Net deferred tax assets Deferred Tax Assets Net Net deferred income tax liability Unrealized gains or losses included in accumulated other comprehensive income or loss, deferred tax liabilities Deferred Tax Liabilities Other Comprehensive Income Unrealized gains or losses included in accumulated other comprehensive income or loss, deferred tax assets Deferred Tax Assets Other Comprehensive Loss Operating Loss Carryforwards Operating Loss Carryforwards Tax credit carryforward, Expiration Date Tax Credit Carryforward Expiration Date Expiration Dates Operating Loss Carryforwards Expiration Date Valuation Allowance Unremitted earnings in foreign subsidiary Undistributed Earnings Of Foreign Subsidiaries Income Tax Penalties Accrued Unrecognized Tax Benefits Income Tax Penalties Accrued Commitments: Amount of credit facilities commitments with vehicle dealers. Amount of commitments the company entered into. Aggregate amount of commitments and guarantor obligations. Commitments and contingencies. Commitments and contingencies. Commitments And Contingencies [Table] Commitments And Contingencies [Table] Performance Guarantee [Member] Performance Guarantee [Member] Putnam and Gibson counties. Putnam and Gibson Counties [Member] Putnam And Gibson Counties [Member] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments: Commitment [Abstract] Credit facilities commitments with dealers Credit Facilities Commitments With Vehicle Dealers Minimum lease commitments Operating Leases Future Minimum Payments Due Total commitments Commitments Guarantees of affiliate pollution control and solid waste disposal bonds Guarantee Obligations Maximum Exposure Total commitments and guarantees Commitments And Guarantees TMCC-affiliated companies [Member] Affiliated Entity [Member] Debt Instrument, Redemption, Period Debt Instrument Redemption Period [Axis] Debt Instrument, Redemption, Period Debt Instrument Redemption Period [Domain] Fiscal year 2028. 2028 [Member] Fiscal Year2028 [Member] Fiscal year 2029. 2029 [Member] Fiscal Year2029 [Member] Fiscal year 2030. 2030 [Member] Fiscal Year2030 [Member] Fiscal year 2031. 2031 [Member] Fiscal Year2031 [Member] Fiscal year 2032. 2032 [Member] Fiscal Year2032 [Member] Lease agreement expiration date Lease Expiration Date1 Total rental expense, including payments to affiliates Operating Leases Rent Expense Net Future minimum lease payments under non-cancelable operating leases Operating Leases Future Minimum Payments Due [Abstract] 2020 Operating Leases Future Minimum Payments Due Current 2021 Operating Leases Future Minimum Payments Due In Two Years 2022 Operating Leases Future Minimum Payments Due In Three Years 2023 Operating Leases Future Minimum Payments Due In Four Years 2024 Operating Leases Future Minimum Payments Due In Five Years Thereafter Operating Leases Future Minimum Payments Due Thereafter Total Provision for indemnification. Indemnification provisions Provision For Indemnification The amount of subvention revenues earned from transactions with related parties. Related party transaction credit support fees, interest and other expenses. Amount, after effects of policies assumed, of expense related to the provision for policy benefits and costs incurred. Net financial services revenues from related parties. Investments and other income, net. Schedule Of Related Party Transactions By Related Party [Table] Schedule Of Related Party Transactions By Related Party [Table] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Net financing revenues: Net Financial Services Revenues From Related Parties [Abstract] Manufacturers’ subvention and other revenues Subvention Revenues From Related Parties Depreciation on operating leases Interest expense: Interest Expense [Abstract] Credit support fees, interest and other expenses Related Party Transaction Credit Support Fees Interest And Other Expenses Insurance earned premiums and contract revenues: Insurance Services Revenue [Abstract] Insurance premiums and contract revenues Investment and other income, net: Related Party Transaction Investment And Other Income Net [Abstract] Interest and other income Interest And Other Income Operating and administrative expenses Insurance losses and loss adjustment expenses Policyholder Benefits Claims Incurred Net Amount of deferred retail subvention revenue from related parties. Amount of deferred operating lease subvention revenue from related parties. Cash and Cash Equivalents Cash And Cash Equivalents [Axis] Cash and Cash Equivalents Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Member] Cash and cash equivalents Cash And Cash Equivalents [Abstract] Investments in marketable securities Commercial paper Commercial Paper At Carrying Value Finance receivables, net Notes Receivable Net [Abstract] Accounts receivable Accounts Receivable Related Parties Deferred retail subvention income Deferred Retail Subvention Revenue Related Parties Investments in operating leases, net Deferred lease subvention income Deferred Operating Lease Subvention Revenue Related Parties Other assets Other Assets [Abstract] Notes receivable Notes Receivable Related Parties Other receivables, net Due From Other Related Parties Other liabilities Other Liabilities [Abstract] Unearned affiliate insurance premiums and contract revenues Unearned Premiums Other payables, net Due To Other Related Parties Current And Noncurrent Notes payable Notes Payable Related Parties Current And Noncurrent For an unclassified balance sheet, amounts of subvention support due from parties associated with the reporting entity. Toyota Financial Services Mexico, S.A. de C.V. Toyota Financial Services Mexico, S.A. de C.V. [Member] Toyota Financial Services Mexico S A De C V [Member] Investments in and Advances to Affiliates Categorization Investments In And Advances To Affiliates Categorization [Axis] Investments in and Advances to Affiliates Categorization Investments In And Advances To Affiliates Categorization [Domain] Financing support from affiliates. Financing Support from Affiliates [Member] Financing Support From Affiliates [Member] Financing support to affiliates. Financing Support to Affiliates [Member] Financing Support To Affiliates [Member] Residential Mortgage [Member] Residential Mortgage [Member] Toyota Financial Savings Bank. TFSB [Member] Toyota Financial Savings Bank [Member] Related Party Transaction Related Party Transaction [Axis] Related Party Transaction Related Party Transaction [Domain] Other financing support arrangements. Other Financing Support Arrangements [Member] Other Financing Support Arrangements [Member] Operational support arrangements. Operational Support Arrangements [Member] Operational Support Arrangements [Member] Toyota Motor Insurance Services Inc​. TMIS [Member] Toyota Motor Insurance Services Inc [Member] Subvention support receivable Subvention Support Receivable Related Parties Increase in line of credit maximum borrowing capacity. Increase in financing support available to affiliates Increase In Line Of Credit Maximum Borrowing Capacity Maximum amount of loans allowed to purchase from related party per year. Amount of loans acquired from related party during the period. Annual maximum participation Loans Acquired From Related Parties Maximum Amount Per Year Loans purchased Loans Acquired From Related Parties During Period Lease agreement expiration year. Lease agreement expiration year Lease Agreement Expiration Year Risk ceded to reinsurers Contracts In Force Subject To Participation Through Reinsurance Percentage Derivative asset liability collateral obligation right to return reclaim cash offset. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Measurement Frequency Fair Value By Measurement Frequency [Axis] Fair Value, Measurement Frequency Fair Value Measurement Frequency [Domain] Recurring [Member] Fair Value Measurements Recurring [Member] Investment Type Investment Type [Axis] Investments Investment Type Categorization [Member] Fixed income mutual funds measured at net asset value [Member] Fixed Income Funds [Member] Level 2 [Member] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value Inputs Level1 [Member] Level 2 [Member] Fair Value Inputs Level2 [Member] Level 3 [Member] Fair Value Inputs Level3 [Member] Mutual fund return bond. Fixed income total return bond funds [Member] Mutual Fund Return Bond [Member] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Available-for-sale securities, Debt securities Equity investments Investments in marketable securities total Derivative assets Counterparty netting and collateral Assets at fair value Assets Fair Value Disclosure Derivative liabilities Counterparty netting and collateral Liabilities at fair value Liabilities Fair Value Disclosure Net assets at fair value Fair Value Net Asset Liability Derivative asset liability collateral obligation right to return reclaim cash offset Derivative Asset Liability Collateral Obligation Right To Return Reclaim Cash Offset Available-for-sale securities, Equity investments Available For Sale Securities Equity Securities Available-for-sale securities total Available For Sale Securities This element represents net asset and liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. Purchases that have taken place during the period in relation to assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. Issuances that have taken place during the period in relation to assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. Sales that have taken place during the period in relation to assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. Settlements that have taken place during the period in relation to assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. Transfers into assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. Transfers out of assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Fair value assets and liabilities measured on recurring basis unobservable input reconciliation. Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Available-for-sale debt securities [Member] Availableforsale Securities [Member] Mortgage-backed securities [Member] Mortgage Backed Securities [Member] Derivative [Member] Derivative [Member] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair value Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value Fair value Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Net Asset And Liability Value Total gains (losses) included in net income Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings Total gains (losses) included in other comprehensive income Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Gain Loss Included In Other Comprehensive Income Loss Purchases Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Purchases Issuances Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Issuances Sales Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Sales Settlements Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Settlements Transfers in to Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Transfers Into Level3 Transfers out of Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Transfers Out Of Level3 Purchases Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Issuances Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Issues Sales Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales Settlements Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements Transfers in to Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 Transfers out of Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 Fair value Fair value The amount of total gains (losses) included in net income attributable to assets held at the reporting date Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 Fair value Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs Total gains (losses) included in net income Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings Total gains (losses) included in other comprehensive income Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss Purchases Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases Issuances Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Issues Sales Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Sales Settlements Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements Transfers in to Level 3 Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3 Transfers out of Level 3 Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 Fair value Including the current and noncurrent portions, fair value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). Fair value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. Fair Value By Balance Sheet Grouping [Table] Fair Value By Balance Sheet Grouping [Table] Working capital [Member] Fair value [Member] Estimate Of Fair Value Fair Value Disclosure [Member] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Financial assets Financial Instruments Financial Assets Balance Sheet Groupings [Abstract] Finance receivables, net Loans Receivable Fair Value Disclosure Financial liabilities Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract] Unsecured notes and loans payable Unsecured Debt Fair Value Disclosure Secured notes and loans payable Secured Debt Fair Value Disclosure Finance receivables from related party Loans And Leases Receivable Related Parties Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Operating Segments [Member] Consolidation Items [Axis] Consolidation Items Consolidation Items [Domain] Operating Segments [Member] Operating Segments [Member] Intercompany Eliminations [Member] Intersegment Elimination [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total financing revenues Gain on sale of commercial finance business Disposal Group Not Discontinued Operation Gain Loss On Disposal Provision (benefit) for income taxes Total assets Terms of insurance policies and contracts. Range Range [Axis] Range Range [Member] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Insurance Policy Term Insurance Policy Term Percentage of insurance revenues accounted for under revenue recognition. Percentage of insurance earned premiums and contract revenues accounted under revenue recognition Percentage Of Insurance Services Revenue Unearned insurance premiums and contract revenues Contract With Customer Liability Insurance earned premiums and contract revenues recognized Contract With Customer Liability Revenue Recognized Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date [Axis] Revenue, remaining performance obligation, amount Revenue Remaining Performance Obligation Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1