Toyota Motor Credit (TM/28) 10-Q 6 Nov 24 2025 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2024	Oct. 31, 2024
Cover [Abstract]
Document Type	10-Q
Document Period End Date	Sep. 30, 2024
Amendment Flag	false
Entity Registrant Name	TOYOTA MOTOR CREDIT CORPORATION
Entity Central Index Key	0000834071
Current Fiscal Year End Date	--03-31
Trading Symbol	TM/28
Entity Filer Category	Non-accelerated Filer
Entity Common Stock Shares Outstanding		91,500
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	1-9961
Entity Tax Identification Number	95-3775816
Entity Address, Address Line One	6565 Headquarters Drive
Entity Address, City or Town	Plano
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75024
City Area Code	469
Local Phone Number	486-9300
Entity Incorporation, State or Country Code	CA
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	Medium-Term Notes, Series BStated Maturity Date January 11, 2028
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing revenues:
Operating lease	$ 1,539	$ 1,571	$ 3,060	$ 3,186
Retail	1,487	1,209	2,907	2,313
Dealer	271	206	539	391
Total financing revenues	3,297	2,986	6,506	5,890
Depreciation on operating leases	1,015	918	2,049	2,073
Interest expense	1,584	1,272	3,027	2,171
Net financing revenues	698	796	1,430	1,646
Voluntary protection contract revenues and insurance earned premiums	300	278	595	549
Investment and other income, (loss), net	388	(18)	611	144
Net financing revenues and other revenues	1,386	1,056	2,636	2,339
Expenses:
Provision for credit losses	206	221	395	386
Operating and administrative	453	449	893	897
Voluntary protection contract expenses and insurance losses	161	145	320	291
Total expenses	820	815	1,608	1,574
Income before income taxes	566	241	1,028	765
Provision for income taxes	137	63	242	195
Net income	$ 429	$ 178	$ 786	$ 570

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 429	$ 178	$ 786	$ 570
Other comprehensive income, net of tax
Net unrealized gains (losses) on available-for-sale debt securities [net of tax (provision) benefit of ($6), $6, ($5) and $8, respectively]	21	(21)	16	(29)
Reclassification of net (gains) losses realized on available-for-sale debt securities included in investment and other income, net [net of tax provision of $0, $0, $0 and $0, respectively]	0	(1)	3	(1)
Other comprehensive income (loss)	21	(22)	19	(30)
Comprehensive income	$ 450	$ 156	$ 805	$ 540

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net unrealized gains (losses) on available-for-sale debt securities, tax (provision) benefit	$ (6)	$ 6	$ (5)	$ 8
Reclassification adjustment for net (losses) gains on available-for-sale marketable securities included in investment and other income, tax provision	$ 0	$ 0	$ 0	$ 0

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
ASSETS
Cash and cash equivalents	$ 10,209	$ 8,570
Restricted cash and cash equivalents	2,183	2,251
Investments in marketable securities	4,781	4,505
Finance receivables, net of allowance for credit losses of $1,656 and $1,637, respectively	103,237	101,669
Investments in operating leases, net	28,710	28,013
Other assets	4,431	4,373
Total assets	153,551	149,381
LIABILITIES AND SHAREHOLDER'S EQUITY
Debt	125,956	122,420
Deferred income taxes	2,670	3,272
Other liabilities	7,138	6,707
Total liabilities	135,764	132,399
Commitments and contingencies (Refer to Note 9)
Shareholder's equity:
Capital stock, no par value (100,000 shares authorized; 91,500 issued and outstanding) at September 30, 2024 and March 31, 2024	915	915
Additional paid-in capital	2	2
Accumulated other comprehensive loss	(46)	(65)
Retained earnings	16,916	16,130
Total shareholder's equity	17,787	16,982
Total liabilities and shareholder's equity	$ 153,551	$ 149,381

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Statement of Financial Position [Abstract]
Finance receivables, allowance for credit losses	$ 1,656	$ 1,637
Common Stock, Par or Stated Value Per Share	$ 0	$ 0
Common Stock, Shares Authorized	100,000	100,000
Common Stock, Shares, Issued	91,500	91,500
Common Stock, Shares, Outstanding	91,500	91,500

Consolidated Balance Sheets (Su

Consolidated Balance Sheets (Supplemental) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
ASSETS
Notes receivable	$ 103,237	$ 101,669
Investments in operating leases, net	28,710	28,013
Other assets	4,431	4,373
Total assets	153,551	149,381
LIABILITIES
Debt	125,956	122,420
Other liabilities	7,138	6,707
Total liabilities	135,764	132,399
Variable Interest Entity, Primary Beneficiary
ASSETS
Notes receivable	32,137	31,130
Investments in operating leases, net	9,027	10,274
Other assets	160	142
Total assets	41,324	41,546
LIABILITIES
Debt	34,459	34,337
Other liabilities	58	66
Total liabilities	$ 34,517	$ 34,403

Consolidated Statements of Shar

Consolidated Statements of Shareholder's Equity - USD ($) $ in Millions	Total	Capital stock	Additional paid-in capital	Accumulated other comprehensive (loss) income	Retained earnings
Balance at Mar. 31, 2023	$ 16,509	$ 915	$ 2	$ (57)	$ 15,649
Net income	570				570
Other comprehensive income (loss), net of tax	(30)			(30)
Balance at Sep. 30, 2023	17,049	915	2	(87)	16,219
Balance at Jun. 30, 2023	16,893	915	2	(65)	16,041
Net income	178				178
Other comprehensive income (loss), net of tax	(22)			(22)
Balance at Sep. 30, 2023	17,049	915	2	(87)	16,219
Balance at Mar. 31, 2024	16,982	915	2	(65)	16,130
Net income	786				786
Other comprehensive income (loss), net of tax	19			19
Balance at Sep. 30, 2024	17,787	915	2	(46)	16,916
Balance at Jun. 30, 2024	17,337	915	2	(67)	16,487
Net income	429				429
Other comprehensive income (loss), net of tax	21			21
Balance at Sep. 30, 2024	$ 17,787	$ 915	$ 2	$ (46)	$ 16,916

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income	$ 786	$ 570
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,087	2,108
Recognition of deferred income and fees	(738)	(794)
Provision for credit losses	395	386
Amortization of deferred costs	526	520
Foreign currency and other adjustments to the carrying value of financial instruments, net	406	(108)
Net (gains) losses from investments in marketable securities	(191)	186
Net change in:
Derivative assets	(13)	14
Other assets and accrued interest	(220)	84
Deferred income taxes	(607)	(463)
Derivative liabilities	(14)	(12)
Other liabilities	704	708
Net cash provided by operating activities	3,121	3,199
Cash flows from investing activities:
Purchase of investments in marketable securities	(359)	(424)
Proceeds from sales of investments in marketable securities	225	295
Proceeds from maturities of investments in marketable securities	74	55
Acquisition of finance receivables	(27,224)	(26,857)
Collection of finance receivables	24,841	21,617
Net change in certain wholesale receivables	422	(1,334)
Acquisition of investments in operating leases	(9,251)	(6,278)
Proceeds from disposals of investments in operating leases	6,397	5,805
Long term loans to affiliates	0	(1,010)
Payments on long term loans from affiliates	190	569
Net change in financing support provided to affiliates	52	61
Other, net	(27)	(18)
Net cash used in investing activities	(4,660)	(7,519)
Cash flows from financing activities:
Proceeds from issuance of debt	22,922	18,194
Payments on debt	(19,636)	(16,693)
Net change in commercial paper and other short-term financing	(168)	(37)
Net change in financing support provided by affiliates	(8)	0
Net cash provided by financing activities	3,110	1,464
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	1,571	(2,856)
Cash and cash equivalents and restricted cash and cash equivalents at the beginning of the period	10,821	8,488
Cash and cash equivalents and restricted cash and cash equivalents at the end of the period	12,392	5,632
Supplemental disclosures:
Interest paid, net	2,479	2,006
Income taxes paid (received), net	$ 343	$ (1)

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 429	$ 178	$ 786	$ 570

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Interim Financial Data

Interim Financial Data	6 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Interim Financial Data	N ote 1 – Interim Financial Data Basis of Presentation The information furnished in these unaudited interim consolidated financial statements as of and for the three and six months ended September 30, 2024 and 2023 has been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). In the fourth quarter of fiscal 2024, we changed our accounting method for investment tax credits from the flow-through method to the deferral method. As such, we have retrospectively applied the impact of the accounting method change to conform certain prior period amounts to current period presentation. Refer to Note 1 – Basis of Presentation and Significant Accounting Policies and Note 15 - Selected Quarterly Financial Data (unaudited) in our fiscal 2024 Form 10-K for additional information. In the opinion of management, the unaudited consolidated 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, 2024, do not necessarily indicate the results which may be expected for the full fiscal year ending March 31, 2025 (“fiscal 2025”). These financial statements should be read in conjunction with the Consolidated Financial Statements and Notes to 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, 2024 (“fiscal 2024 ”), which was filed with the Securities and Exchange Commission on June 4, 2024. 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. Recently Adopted Accounting Guidance There were no new accounting pronouncements adopted in the first half and second quarter of fiscal 2025 . Accounting Guidance Issued But Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280) , to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU is effective for us on March 31, 2025, with early adoption permitted. We are currently evaluating the impact of this standard on our consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) , requiring more granular disclosure of the components of income taxes. This ASU is effective for us on March 31, 2026, with early adoption permitted. We are currently evaluating the impact of this standard on our consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40) , requiring disclosure in the notes to the financial statements for specified information about certain costs and expenses. This ASU is effective for us on March 31, 2028, with early adoption permitted. We are currently evaluating the impact of this standard on our consolidated financial statements and related disclosures. Other Matters We have continued to evaluate the private label financial services business, including partnering with or transitioning the business to our affiliates. In August 2024, management presented a plan to the Board of Directors (“Board”) of TMCC to transition the origination and financing of new automotive finance and lease contracts under the Mazda Financial Services (“MFS”) Agreement to Toyota Financial Savings Bank (“TFSB”), an unconsolidated affiliate of TMCC, subject to the successful completion of a trial run with certain Mazda dealers commencing in the third quarter of fiscal year 2025 (the “MFS Transition Plan”). As it was deemed to be in the best interests of the Corporation and its sole shareholder, Toyota Financial Services International Corporation, the Board approved the MFS Transition Plan, including all costs and expenses incurred with the transition, which are not expected to be significant. No existing TMCC private label assets or liabilities will be transitioned to or acquired by TFSB pursuant to the MFS Transition Plan. In connection with the MFS Transition Plan, TMCC has entered into certain servicing agreements with TFSB to service the retail and lease contracts originated under the MFS Agreement by TFSB. TMCC will continue to offer voluntary protection products to MFS customers.

Investments in Marketable Secur

Investments in Marketable Securities	6 Months Ended
	Sep. 30, 2024
Marketable Securities [Abstract]
Investments in Marketable Securities	Note 2 – Investments in Marketable Securities Investments in marketable securities consist of debt securities and equity investments. We classify all of our debt securities as available-for-sale (“AFS”). Except when the fair value option is elected, AFS debt securities are recorded at fair value with unrealized gains or losses included in accumulated other comprehensive income (“AOCI”), net of applicable taxes. Interest income is recognized on an accrual basis and determined using the effective interest method. Realized gains and losses from sales of AFS debt securities are determined using the specific identification method or first in first out method. Dividend income, interest income, and realized gains and losses from the sales of AFS debt securities are included in Investment and other income, net in our Consolidated Statements of Income. We elected the fair value option for certain debt securities held within one of our investment portfolios for operational ease given the size and composition of this portfolio. All debt securities within this specific portfolio are recorded at fair value with changes in fair value included in Investment and other income, net in our Consolidated Statements of Income. AFS debt securities for which the fair value option is elected are not subject to credit loss impairment evaluation. As of September 30, 2024 and March 31, 2024, we held AFS debt securities for which the fair value option was elected of $ 785 million and $ 778 million , respectively. The difference between the aggregate fair value and the aggregate unpaid principal balance of AFS debt securities for which the fair value option was elected was an unrealized loss of $ 43 million and $ 70 million as of September 30, 2024 and March 31, 2024, respectively. All equity investments are recorded at fair value with changes in fair value included in Investment and other income, net in our Consolidated Statements of Income. Realized gains and losses from sales of equity investments are determined using the first in first out method and are included in Investment and other income, net in our Consolidated Statements of Income. Investments in marketable securities consisted of the following: September 30, 2024 Amortized Unrealized Unrealized Fair cost gains losses value Available-for-sale debt securities: U.S. government and agency obligations $ 805 $ 4 $ ( 65 ) $ 744 Foreign government and agency obligations 14 1 ( 1 ) 14 Municipal debt securities 8 1 ( 1 ) 8 Corporate debt securities 469 5 ( 35 ) 439 Mortgage-backed securities: U.S. government agency 121 1 ( 2 ) 120 Non-agency residential 12 - ( 1 ) 11 Non-agency commercial 55 - ( 6 ) 49 Asset-backed securities 128 1 ( 3 ) 126 Total available-for-sale debt securities $ 1,612 $ 13 $ ( 114 ) $ 1,511 Equity investments 3,270 Total investments in marketable securities $ 4,781 Note 2 – Investments in Marketable Securities (Continued) March 31, 2024 Amortized Unrealized Unrealized Fair cost gains losses value Available-for-sale debt securities: U.S. government and agency obligations $ 783 $ 1 $ ( 87 ) $ 697 Foreign government and agency obligations 13 - ( 1 ) 12 Municipal debt securities 8 - ( 1 ) 7 Corporate debt securities 477 2 ( 49 ) 430 Mortgage-backed securities: U.S. government agency 123 - ( 5 ) 118 Non-agency residential 12 - ( 1 ) 11 Non-agency commercial 64 - ( 9 ) 55 Asset-backed securities 142 1 ( 5 ) 138 Total available-for-sale debt securities $ 1,622 $ 4 $ ( 158 ) $ 1,468 Equity investments 3,037 Total investments in marketable securities $ 4,505 A portion of our equity investments are investments in funds that are privately placed and managed by an open-end investment management company (the “Trust”). If we elect to redeem shares, the Trust will normally redeem all shares for cash, but may, in unusual circumstances, redeem amounts exceeding the lesser of $ 250 thousand or 1 percent of the Trust’s asset value by payment in kind of securities held by the respective fund during any 90 -day period. We also invest in actively traded open-end mutual funds. Redemptions are subject to normal terms and conditions as described in each fund’s prospectus. Unrealized Losses on Securities The following table presents the aggregate fair value and unrealized losses on AFS debt securities in a continuous unrealized loss position: September 30, 2024 Less than 12 months 12 months or longer Total Available-for-sale debt securities: Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses U.S. government and agency obligations $ 44 $ - $ 572 $ ( 65 ) $ 616 $ ( 65 ) Foreign government and agency obligations - - 5 ( 1 ) 5 ( 1 ) Municipal debt securities - - 2 ( 1 ) 2 ( 1 ) Corporate debt securities 4 - 319 ( 35 ) 323 ( 35 ) Mortgage-backed securities U.S. Government agency - - 40 ( 2 ) 40 ( 2 ) Non-agency residential - - 7 ( 1 ) 7 ( 1 ) Non-agency commercial - - 48 ( 6 ) 48 ( 6 ) Asset-backed securities 3 - 51 ( 3 ) 54 ( 3 ) Total available-for-sale debt securities $ 51 $ - $ 1,044 $ ( 114 ) $ 1,095 $ ( 114 ) Note 2 – Investments in Marketable Securities (Continued) March 31, 2024 Less than 12 months 12 months or longer Total Available-for-sale debt securities: Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses U.S. government and agency obligations $ 317 $ ( 13 ) $ 336 $ ( 74 ) $ 653 $ ( 87 ) Foreign government and agency obligations 1 - 8 ( 1 ) 9 ( 1 ) Municipal debt securities - - 2 ( 1 ) 2 ( 1 ) Corporate debt securities 31 ( 3 ) 339 ( 46 ) 370 ( 49 ) Mortgage-backed securities U.S. Government agency 51 ( 1 ) 49 ( 4 ) 100 ( 5 ) Non-agency residential 1 - 7 ( 1 ) 8 ( 1 ) Non-agency commercial 1 - 53 ( 9 ) 54 ( 9 ) Asset-backed securities 17 - 58 ( 5 ) 75 ( 5 ) Total available-for-sale debt securities $ 419 $ ( 17 ) $ 852 $ ( 141 ) $ 1,271 $ ( 158 ) An allowance for credit losses is established when it is determined that a credit loss has occurred. As of September 30, 2024 and March 31, 2024, management determined credit losses for securities in an unrealized loss position were not significant. This analysis considered a variety of factors including, but not limited to, performance indicators of the issuer, default rates, industry analyst reports, credit ratings, and other relevant information. Gains and Losses on Securities The following table represents gains and losses on our investments in marketable securities presented in our Consolidated Statements of Income: Three months ended Six months ended September 30, September 30, 2024 2023 2024 2023 Available-for-sale debt securities: Unrealized gains (losses) on securities for which the fair value option was elected $ 32 $ ( 38 ) $ 27 $ ( 50 ) Realized gains (losses) on sales, net $ - $ ( 2 ) $ ( 4 ) $ ( 2 ) Equity investments: Unrealized gains (losses) $ 170 $ ( 146 ) $ 184 $ ( 134 ) Realized losses on sales, net $ ( 10 ) $ - $ ( 16 ) $ - Contractual Maturities The amortized cost and fair value by contractual maturities of available-for-sale debt securities are summarized in the following table. Actual maturities may differ from contractual maturities because certain borrowers have the right to call or prepay certain obligations. September 30, 2024 Amortized cost Fair value Available-for-sale debt securities: Due within 1 year $ 60 $ 59 Due after 1 year through 5 years 342 336 Due after 5 years through 10 years 443 433 Due after 10 years 451 377 Mortgage-backed and asset-backed securities 1 316 306 Total $ 1,612 $ 1,511 1. Mortgage-backed and asset-backed securities are shown separately from other maturity groupings as these securities have multiple maturity dates.

Finance Receivables, Net

Finance Receivables, Net	6 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Finance Receivables, Net	Note 3 – Finance Receivables, Net Finance receivables, net consists of the retail loan and dealer products portfolio segments, and includes deferred origination costs, deferred income, and allowance for credit losses. Finance receivables, net also includes securitized retail receivables, which represent retail receivables that have been sold for legal purposes to securitization trusts but continue to be included in our consolidated financial statements, as discussed further in Note 8 – Variable Interest Entities . Cash flows from these securitized retail receivables are available only for the repayment of debt issued by these trusts and other obligations arising from the securitization transactions. They are not available for payment of our other obligations or to satisfy claims of our other creditors. Finance receivables, net consisted of the following: September 30, March 31, 2024 2024 Retail receivables 1 $ 88,860 $ 87,150 Dealer financing 16,380 16,181 105,240 103,331 Deferred origination costs 1,339 1,399 Deferred income ( 1,686 ) ( 1,424 ) Allowance for credit losses Retail receivables ( 1,563 ) ( 1,549 ) Dealer financing ( 93 ) ( 88 ) Total allowance for credit losses ( 1,656 ) ( 1,637 ) Finance receivables, net $ 103,237 $ 101,669 1 Includes gross securitized retail receivables of $ 32.5 billion and $ 31.5 billion as of September 30, 2024 and March 31, 2024 , respectively. Accrued interest related to finance receivables is presented in Other assets on the Consolidated Balance Sheets and was $ 394 million and $ 396 million at September 30, 2024 and March 31, 2024, respectively. Note 3 – Finance Receivables, Net (Continued) Credit Quality Indicators We are exposed to credit risk on our finance receivables. Credit risk is the risk of loss arising from the failure of customers or dealers to meet the terms of their contracts with us or otherwise fail to perform as agreed. Retail Loan Portfolio Segment The retail loan portfolio segment consists of one class of finance receivables. While we use various credit quality metrics to develop our allowance for credit losses on the retail loan portfolio segment, we primarily utilize the aging of the individual accounts to monitor the credit quality of these finance receivables. Based on our experience, the payment status of borrowers is the strongest indicator of the credit quality of the underlying receivables. Payment status also impacts charge-offs. Individual borrower accounts within the retail loan portfolio segment are segregated into aging categories based on the number of days past due. The aging of finance receivables is updated monthly. The following tables present the amortized cost basis of our retail loan portfolio by origination fiscal year by credit quality indicator based on number of days past due: Amortized Cost Basis by Origination Fiscal Year at September 30, 2024 2025 2024 2023 2022 2021 2020 and Prior Total Aging of finance receivables: Current $ 18,204 $ 29,732 $ 18,148 $ 11,827 $ 6,140 $ 1,881 $ 85,932 30-59 days past due 92 428 506 409 225 102 1,762 60-89 days past due 26 138 162 125 68 35 554 90 days or greater past due 9 70 81 56 29 20 265 Total $ 18,331 $ 30,368 $ 18,897 $ 12,417 $ 6,462 $ 2,038 $ 88,513 Gross Charge-Offs $ 1 $ 105 $ 161 $ 104 $ 41 $ 23 $ 435 Amortized Cost Basis by Origination Fiscal Year at March 31, 2024 2024 2023 2022 2021 2020 2019 and Prior Total Aging of finance receivables: Current $ 35,407 $ 22,473 $ 15,041 $ 8,539 $ 2,654 $ 748 $ 84,862 30-59 days past due 301 488 426 242 92 53 1,602 60-89 days past due 77 143 119 68 27 17 451 90 days or greater past due 38 69 53 29 10 11 210 Total $ 35,823 $ 23,173 $ 15,639 $ 8,878 $ 2,783 $ 829 $ 87,125 Gross Charge-Offs $ 38 $ 297 $ 258 $ 111 $ 38 $ 34 $ 776 The amortized cost of retail loan portfolio excludes accrued interest of $ 321 million and $ 318 million at September 30, 2024 and March 31, 2024, respectively. The preceding tables include contracts greater than 120 days past due, which are recorded at the fair value of collateral less estimated costs to sell, and contracts in bankruptcy. Note 3 – Finance Receivables, Net (Continued) Dealer Products Portfolio Segment The dealer products portfolio segment consists of three classes of finance receivables: wholesale, real estate, and working capital (includes both working capital and revolving lines of credit). All loans outstanding for an individual dealer or dealer group, which includes affiliated entities, are aggregated and evaluated collectively by dealer or dealer group. This reflects the interconnected nature of financing provided to our individual dealer and dealer group customers, and their affiliated entities. When assessing the credit quality of the finance receivables within the dealer products portfolio segment, we segregate the finance receivables account balances into four categories representing distinct credit quality indicators based on internal risk assessments. The internal risk assessments for all finance receivables within the dealer products portfolio segment are updated on a monthly basis. The four credit quality indicators are: • Performing – Account not classified as either Credit Watch, At Risk or Default; • Credit Watch – Account designated for elevated attention; • At Risk – Account where there is an increased likelihood that default may exist based on qualitative and quantitative factors; and • Default – Account is not currently meeting contractual obligations or we have temporarily waived certain contractual requirements. The following tables present the amortized cost basis of our dealer products portfolio by credit quality indicator based on internal risk assessments by origination fiscal year: Amortized Cost Basis by Origination Fiscal Year at September 30, 2024 2025 2024 2023 2022 2021 2020 and Prior Revolving loans Total Wholesale Performing $ - $ - $ - $ - $ - $ - $ 5,952 $ 5,952 Credit Watch - - - - - - 379 379 At Risk - - - - - - 21 21 Default - - - - - - 8 8 Wholesale total $ - $ - $ - $ - $ - $ - $ 6,360 $ 6,360 Real estate Performing $ 713 $ 1,094 $ 783 $ 701 $ 800 $ 735 $ 208 $ 5,034 Credit Watch 70 46 - 28 15 - - 159 At Risk - 9 - - - 2 - 11 Default 5 - - - - - - 5 Real estate total $ 788 $ 1,149 $ 783 $ 729 $ 815 $ 737 $ 208 $ 5,209 Working Capital Performing $ 391 $ 627 $ 286 $ 178 $ 112 $ 231 $ 2,939 $ 4,764 Credit Watch 11 12 14 4 - - 2 43 At Risk - - 3 - - - 1 4 Default - - - - - - - - Working capital total $ 402 $ 639 $ 303 $ 182 $ 112 $ 231 $ 2,942 $ 4,811 Total $ 1,190 $ 1,788 $ 1,086 $ 911 $ 927 $ 968 $ 9,510 $ 16,380 For the three and six months ended September 30, 2024 , there were no gross charge-offs in our dealer product portfolio. Note 3 – Finance Receivables, Net (Continued) Amortized Cost Basis by Origination Fiscal Year at March 31, 2024 2024 2023 2022 2021 2020 2019 and Prior Revolving loans Total Wholesale Performing $ - $ - $ - $ - $ - $ - $ 6,287 $ 6,287 Credit Watch - - - - - - 238 238 At Risk - - - - - - 112 112 Default - - - - - - 36 36 Wholesale total $ - $ - $ - $ - $ - $ - $ 6,673 $ 6,673 Real estate Performing $ 1,224 $ 883 $ 815 $ 860 $ 128 $ 784 $ 3 $ 4,697 Credit Watch 58 37 44 6 - - - 145 At Risk 8 1 10 - - 2 - 21 Default 4 2 - 25 - - - 31 Real estate total $ 1,294 $ 923 $ 869 $ 891 $ 128 $ 786 $ 3 $ 4,894 Working Capital Performing $ 769 $ 414 $ 235 $ 122 $ 105 $ 159 $ 2,715 $ 4,519 Credit Watch 20 41 13 - - - 2 76 At Risk - 3 - - 2 - 1 6 Default - - - 13 - - - 13 Working capital total $ 789 $ 458 $ 248 $ 135 $ 107 $ 159 $ 2,718 $ 4,614 Total $ 2,083 $ 1,381 $ 1,117 $ 1,026 $ 235 $ 945 $ 9,394 $ 16,181 For the twelve months ended March 31, 2024 , there were no gross charge-offs in our dealer product portfolio. The amortized cost of the dealer products portfolio excludes accrued interest of $ 73 million and $ 78 million at September 30, 2024 and March 31, 2024, respectively. As of September 30, 2024 and March 31, 2024, the amount of line-of-credit arrangements that are converted to term loans in each reporting period was not significant. Note 3 – Finance Receivables, Net (Continued) Past Due Finance Receivables by Class Substantially all finance receivables do not involve recourse to the dealer in the event of customer default. Finance receivables include contracts greater than 120 days past due, which are recorded at the fair value of collateral less estimated costs to sell, and contracts in bankruptcy. Contracts for which vehicles have been repossessed are excluded. For all finance receivables, we define “past due” as any payment, including principal and interest, that is at least 30 days past the contractual due date. For any customer who is granted a payment extension under an extension program, the aging of the receivable is adjusted for the number of days of the extension granted. The following tables present the aging of the amortized cost basis of our finance receivables by class: September 30, 2024 30 - 59 Days 60 - 89 Days 90 Days or Total Past Current Total Finance 90 Days or greater past due and accruing Retail loan $ 1,762 $ 554 $ 265 $ 2,581 $ 85,932 $ 88,513 $ 173 Wholesale 1 - - 1 6,359 6,360 - Real estate - - - - 5,209 5,209 - Working capital 25 - - 25 4,786 4,811 - Total $ 1,788 $ 554 $ 265 $ 2,607 $ 102,286 $ 104,893 $ 173 March 31, 2024 30 - 59 Days 60 - 89 Days 90 Days or Total Past Current Total Finance 90 Days or greater past due and accruing Retail loan $ 1,602 $ 451 $ 210 $ 2,263 $ 84,862 $ 87,125 $ 142 Wholesale - - - - 6,673 6,673 - Real estate - - - - 4,894 4,894 - Working capital - - - - 4,614 4,614 - Total $ 1,602 $ 451 $ 210 $ 2,263 $ 101,043 $ 103,306 $ 142 Loan Modifications Under certain circumstances, we may agree to modify the terms of an existing loan with a borrower for various reasons, including a borrower experiencing financial difficulties. We evaluate all loan modifications, which generally represent a continuation of the existing loan and not a new loan. For borrowers experiencing financial difficulties within the retail loan portfolio segment, we may provide contract term extensions. For borrowers experiencing financial difficulties within the dealer product portfolio segment, we may provide contract term extensions, interest rate adjustments, waivers of loan covenants, or any combination of the three. The effect of these modifications is already included in the allowance for credit losses because our estimated allowance represents currently expected credit losses. The amortized cost at September 30, 2024 and 2023 of the loans modified during the three and six months ended September 30, 2024 and 2023 were not significant. The unpaid principal balances, net of recoveries, of loans charged off during the reporting period that were modified within 12 months preceding default were not significant for the three and six months ended September 30, 2024 and 2023 .

Allowance for Credit Losses

Allowance for Credit Losses	6 Months Ended
	Sep. 30, 2024
Loans and Leases Receivable Disclosure [Abstract]
Allowance for Credit Losses	Note 4 – Allowance for Credit Losses The following tables provide information related to our allowance for credit losses for finance receivables and certain off-balance sheet lending commitments by portfolio segment: Three months ended September 30, 2024 Retail loan Dealer products Total Beginning balance, July 1, 2024 $ 1,559 $ 146 $ 1,705 Charge-offs ( 237 ) - ( 237 ) Recoveries 35 - 35 Provision for credit losses 206 - 206 Ending balance, September 30, 2024 ¹ $ 1,563 $ 146 $ 1,709 Six months ended September 30, 2024 Retail loan Dealer products Total Beginning balance, April 1, 2024 $ 1,549 $ 135 $ 1,684 Charge-offs ( 435 ) - ( 435 ) Recoveries 65 - 65 Provision for credit losses 384 11 395 Ending balance, September 30, 2024 ¹ $ 1,563 $ 146 $ 1,709 1 Ending balance includes $ 53 million of allowance for credit losses recorded in Other liabilities on the Consolidated Balance Sheet which is related to off-balance sheet lending commitments in the dealer products portfolio. Three months ended September 30, 2023 Retail loan Dealer products Total Beginning balance, July 1, 2023 $ 1,483 $ 90 $ 1,573 Charge-offs ( 191 ) - ( 191 ) Recoveries 25 - 25 Provision for credit losses 212 9 221 Ending balance, September 30, 2023 ¹ $ 1,529 $ 99 $ 1,628 Six months ended September 30, 2023 Retail loan Dealer products Total Beginning balance, April 1, 2023 $ 1,430 $ 83 $ 1,513 Charge-offs ( 325 ) - ( 325 ) Recoveries 54 - 54 Provision for credit losses 370 16 386 Ending balance, September 30, 2023 ¹ $ 1,529 $ 99 $ 1,628 1 Ending balance includes $ 33 million of allowance for credit losses recorded in Other liabilities on the Consolidated Balance Sheet which is related to off-balance sheet lending commitments in the dealer products portfolio. We have elected to exclude accrued interest from the measurement of expected credit losses as we apply policies and procedures that result in the timely write-offs of accrued interest. Accrued interest is written off within allowance for credit losses at the earlier of when an account is deemed to be uncollectible or when an account is greater than 120 days past due. Finance receivables for the dealer products portfolio segment as of September 30, 2024, includes $ 1.3 billion in finance receivables that are guaranteed by Toyota Motor North America, Inc. (“TMNA”), and $ 273 million in finance receivables that are guaranteed by third-party private Toyota distributors. Finance receivables for the dealer products portfolio segment as of September 30, 2023, includes $ 1.2 billion in finance receivables that are guaranteed by TMNA, and $ 219 million in finance receivables that are guaranteed by third-party private Toyota distributors. These finance receivables are related to certain Toyota and Lexus dealers and other third parties to whom we provided financing at the request of TMNA and third-party private Toyota distributors.

Investments in Operating Leases

Investments in Operating Leases, Net	6 Months Ended
	Sep. 30, 2024
Leases, Operating [Abstract]
Investments in Operating Leases, Net	Note 5 – Investments in Operating Leases, Net Investments in operating leases, net consists of vehicle lease contracts acquired from dealers, and includes deferred origination fees and costs, deferred income, investment tax credits, and accumulated depreciation. Non-cash investing activities related to investment tax credits on investments in operating leases for the six months ended September 30, 2024 and 2023 were $ 281 million and $ 84 million , respectively. Securitized investments in operating leases represent beneficial interests in a pool of certain vehicle leases that have been sold for legal purposes to securitization trusts but continue to be included in our consolidated financial statements as discussed further in Note 8 - Variable Interest Entities . Cash flows from these securitized investments in operating leases are available only for the repayment of debt issued by these trusts and other obligations arising from the securitization transactions. They are not available for payment of our other obligations or to satisfy claims of our other creditors. Investments in operating leases, net consisted of the following: September 30, March 31, 2024 2024 Investments in operating leases 1 $ 35,290 $ 35,383 Deferred income ( 867 ) ( 609 ) Accumulated depreciation ( 5,713 ) ( 6,761 ) Investments in operating leases, net $ 28,710 $ 28,013 1 Includes gross securitized investments in operating leases of $ 11.9 billion and $ 13.8 billion as of September 30, 2024 and March 31, 2024 , respectively.

Derivatives, Hedging Activities

Derivatives, Hedging Activities and Interest Expense	6 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives, Hedging Activities and Interest Expense	Note 6 – Derivatives, Hedging Activities and Interest Expense Derivative Instruments Our liabilities consist mainly of fixed and variable rate debt, denominated in U.S. dollars and various other currencies, which we issue in the global capital markets, while our assets consist primarily of U.S. dollar denominated, fixed rate receivables. We enter into interest rate swaps, and foreign currency swaps to economically hedge the interest rate and foreign currency risks that result from the different characteristics of our assets and liabilities. Our use of derivative transactions is intended to reduce long-term fluctuations in the fair value of assets and liabilities caused by market movements. All of our derivatives are categorized as not designated for hedge accounting, and all of our derivative activities are authorized and monitored by our management and our Asset-Liability Committee which provides a framework for financial controls and governance to manage market risk. All derivative instruments are recorded on the balance sheet at fair value, taking into consideration the effects of legally enforceable master netting agreements that allow us to net settle asset and liability positions and offset cash collateral with the same counterparty on a net basis. Changes in the fair value of our derivative instruments are recorded in Interest expense in our Consolidated Statements of Income. The derivative instruments are included as a component of Other assets or Other liabilities on our Consolidated Balance Sheets. Offsetting of Derivatives Accounting guidance permits the net presentation on our Consolidated Balance Sheets of derivative receivables and derivative payables with the same counterparty and the related cash collateral when a legally enforceable master netting agreement exists, or when the derivative receivables and derivative payables meet all the conditions for the right of setoff to exist. When we meet this condition, we elect to present such balances on a net basis. Over-the-Counter (“OTC”) Derivatives Our International Swaps and Derivatives Association Master Agreements are our master netting agreements which permit multiple transactions to be cancelled and settled with a single net balance paid to either party for our OTC derivatives. The master netting agreements also contain reciprocal collateral agreements which require the transfer of cash collateral to the party in a net asset position across all transactions. Our collateral agreements with substantially all our counterparties include a zero threshold, full collateralization arrangement. Although we have daily valuation and collateral exchange arrangements with all of our counterparties, due to the time required to move collateral, there may be a delay of up to one day between the exchange of collateral and the valuation of our derivatives. We would not be required to post additional collateral to the counterparties with whom we were in a net liability position at September 30, 2024 , if our credit ratings were to decline, since we fully collateralize without regard to credit ratings with these counterparties. In addition, as our collateral agreements include legal right of offset provisions, collateral amounts are netted against derivative assets or derivative liabilities, and the net amount is included in Other assets or Other liabilities on our Consolidated Balance Sheets. Centrally Cleared Derivatives For our centrally cleared derivatives, variation margin payments are legally characterized as settlement payments and accounted for with corresponding derivative positions as one unit of account as opposed to collateral. Initial margin payments are separately recorded in Other assets on our Consolidated Balance Sheets. We perform valuation and margin exchange on a daily basis. Similar to the OTC swaps, there may be a delay of up to one day between the exchange of margin payments and the valuation of our derivatives. Note 6 – Derivatives, Hedging Activities and Interest Expense (Continued) Derivative Activity Impact on Consolidated Financial Statements The following tables show the financial statement line item and amount of our derivative assets and liabilities that are reported on our Consolidated Balance Sheets: September 30, 2024 March 31, 2024 Fair Fair Notional value Notional value Other assets: Interest rate swaps $ 50,878 $ 567 $ 71,830 $ 1,149 Foreign currency swaps 4,859 253 1,759 89 Total $ 55,737 $ 820 $ 73,589 $ 1,238 Counterparty netting ( 309 ) ( 346 ) Collateral held ( 457 ) ( 851 ) Carrying value of derivative contracts – Other assets $ 54 $ 41 Other liabilities: Interest rate swaps $ 61,271 $ 24 $ 38,920 $ 52 Foreign currency swaps 5,337 515 7,433 918 Total $ 66,608 $ 539 $ 46,353 $ 970 Counterparty netting ( 309 ) ( 346 ) Collateral posted ( 221 ) ( 601 ) Carrying value of derivative contracts – Other liabilities $ 9 $ 23 As of September 30, 2024 and March 31, 2024, we held excess collateral and variation margin of $ 5 million, respectively, which we did not use to offset derivative assets and was recorded in Other liabilities on our Consolidated Balance Sheets. As of September 30, 2024 and March 31, 2024, we posted initial margin, excess collateral, and variation margin of $ 420 million and $ 311 million, respectively, which we did not use to offset derivative liabilities and was recorded in Other assets on our Consolidated Balance Sheets. The following table summarizes the components of interest expense, including the location and amount of gains and losses on derivative instruments and related hedged items, as reported in our Consolidated Statements of Income: Three months ended Six months ended September 30, September 30, 2024 2023 2024 2023 Interest expense on debt $ 1,424 $ 1,189 $ 2,829 $ 2,275 Interest income on derivatives ( 39 ) ( 205 ) ( 97 ) ( 414 ) Interest expense on debt and derivatives 1,385 984 2,732 1,861 Losses (gains) on debt denominated in 374 ( 280 ) 394 ( 243 ) (Gains) losses on foreign currency swaps ( 606 ) 253 ( 599 ) 297 Losses on U.S. dollar interest rate swaps 431 315 500 256 Total interest expense $ 1,584 $ 1,272 $ 3,027 $ 2,171 Interest expense on debt and derivatives represents net interest settlements and changes in accruals. Gains and losses on derivatives and debt denominated in foreign currencies exclude net interest settlements and changes in accruals. Cash flows associated with derivatives are reported in Net cash provided by operating activities in our Consolidated Statements of Cash Flows.

Debt and Credit Facilities

Debt and Credit Facilities	6 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Debt and Credit Facilities	Note 7 – Debt and Credit Facilities Debt and the related weighted average contractual interest rates are summarized as follows: September 30, 2024 March 31, 2024 Face value Carrying value Weighted average Face value Carrying value Weighted average Unsecured notes and loans payable $ 91,991 $ 91,497 4.17 % $ 88,576 $ 88,083 4.19 % Secured notes and loans payable 34,513 34,459 4.85 % 34,387 34,337 4.64 % Total debt $ 126,504 $ 125,956 4.36 % $ 122,963 $ 122,420 4.32 % The carrying value of our debt includes unamortized premiums, discounts, debt issuance costs and the effects of foreign currency translation adjustments. Weighted average contractual interest rates are calculated based on original notional or par value before consideration of premium or discount and approximate the effective interest rates. Debt is callable at par value. Unsecured Notes and Loans Payable Our unsecured notes and loans payable consist of commercial paper and fixed and variable rate debt. Short-term funding needs are met through the issuance of commercial paper in the U.S. Amount outstanding under our commercial paper programs was $ 17.1 billion and $ 17.2 billion as of September 30, 2024 and March 31, 2024, respectively. Upon issuance of fixed rate debt, we generally elect to enter into pay-float swaps to convert fixed rate payments on debt to floating rate payments. Certain unsecured notes and loans payable are denominated in various foreign currencies. The debt is translated into U.S. dollars using the applicable exchange rate at the transaction date and retranslated at each balance sheet date using the exchange rate in effect at that date. Concurrent with the issuance of these foreign currency unsecured notes and loans payable, we enter into currency swaps in the same notional amount to convert non-U.S. currency payments to U.S. dollar denominated payments. Gains and losses related to foreign currency transactions are included in Interest expense in our Consolidated Statements of Income. Certain of our unsecured notes and loans payable contain covenants and conditions customary in transactions of this nature, including negative pledge provisions, cross-default provisions and limitations on certain consolidations, mergers and sales of assets. We are currently in compliance with these covenants and conditions. Secured Notes and Loans Payable Our secured notes and loans payable are denominated in U.S. dollars and consist of both fixed and variable rate debt. Secured notes and loans payable are issued using on-balance sheet securitization trusts, as further discussed in Note 8 – Variable Interest Entities . These notes are repayable only from collections on the underlying securitized retail finance receivables and the beneficial interests in investments in operating leases and from related credit enhancements. Some of our secured notes are backed by a revolving pool of finance receivables and cash collateral, with the ability to repay the notes in full after the revolving period ends, after which an amortization period begins. Note 7 – Debt and Credit Facilities (Continued) Credit Facilities and Letters of Credit For additional liquidity purposes, we maintain credit facilities, which may be used for general corporate purposes, as described below: 364-Day Credit Agreement, Three-Year Credit Agreement and Five-Year Credit Agreement TMCC, Toyota Credit de Puerto Rico Corp. (“TCPR”), a wholly owned subsidiary, and other Toyota affiliates are party to a $ 5.0 billion 364-day syndicated bank credit facility, a $ 5.0 billion three-year syndicated bank credit facility, and a $ 5.0 billion five-year syndicated bank credit facility, expiring in fiscal years ending March 31, 2025, 2027, and 2029, respectively. The ability to make draws is subject to covenants and conditions customary in transactions of this nature, including negative pledge provisions, cross-default provisions and limitations on certain consolidations, mergers and sales of assets. These agreements were no t drawn upon and had no outstanding balances as of September 30, 2024 and March 31, 2024. We are currently in compliance with the covenants and conditions of the credit agreements described above. Committed Revolving Asset-backed Facility We are party to a 364-day revolving securitization facility with certain bank-sponsored asset-backed conduits and other financial institutions expiring in fiscal year ending March 31, 2026. Under the terms and subject to the conditions of this facility, the committed lenders under the facility have committed to make advances up to a facility limit of $ 8.5 billion backed by eligible retail finance receivables transferred by us to a special-purpose entity acting as borrower. We utilized $ 4.5 billion and $ 3.4 billion of this facility as of September 30, 2024 and March 31, 2024, respectively. Other Unsecured Credit Agreements TMCC is party to additional unsecured credit facilities with various banks. As of September 30, 2024, TMCC had committed bank credit facilities totaling $ 4.6 billion , of which $ 2.2 billion , $ 400 million , $ 1.7 billion , and $ 325 million mature in fiscal years ending March 31, 2025, 2026, 2027, and 2028, respectively. These credit agreements contain covenants and conditions customary in transactions of this nature, including negative pledge provisions, cross-default provisions and limitations on certain consolidations, mergers and sales of assets. These credit facilities were no t drawn upon and had no outstanding balances as of September 30, 2024 and March 31, 2024. We are currently in compliance with the covenants and conditions of the credit agreements described above. TMCC is party to a $ 5.0 billion three-year revolving credit facility with Toyota Motor Sales U.S.A., Inc. expiring in fiscal year ending March 31, 2027 . This credit facility was no t drawn upon and had no outstanding balance as of September 30, 2024 and March 31, 2024. From time to time, we may borrow from affiliates based upon a number of business factors such as funds availability, cash flow timing, relative cost of funds, and market access capabilities. Amounts borrowed from affiliates are recorded in Other liabilities on our Consolidated Balance Sheets.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Sep. 30, 2024
Variable Interest Entities [Abstract]
Variable Interest Entities	Note 8 – Variable Interest Entities We use one or more special purpose entities that are considered Variable Interest Entities (“VIEs”) to issue asset-backed securities to third-party bank-sponsored asset-backed securitization vehicles and to investors in securitization transactions. The securities issued by these VIEs are backed by the cash flows related to retail finance receivables and beneficial interests in investments in operating leases (“Securitized Assets”). We hold variable interests in the VIEs that could potentially be significant to the VIEs. We determined that we are the primary beneficiary of the securitization trusts because (i) our servicing responsibilities for the Securitized Assets give us the power to direct the activities that most significantly impact the performance of the VIEs, and (ii) our variable interests in the VIEs give us the obligation to absorb losses and the right to receive residual returns that could potentially be significant. The following tables show the assets and liabilities related to our VIE securitization transactions that are included on our Consolidated Balance Sheets: September 30, 2024 VIE Assets VIE Liabilities Restricted cash and cash equivalents Net securitized assets Other Debt Other Retail finance receivables $ 1,551 $ 32,137 $ 137 $ 28,305 $ 49 Investments in operating leases 632 9,027 23 6,154 9 Total $ 2,183 $ 41,164 $ 160 $ 34,459 $ 58 March 31, 2024 VIE Assets VIE Liabilities Restricted cash and cash equivalents Net securitized assets Other Debt Other Retail finance receivables $ 1,559 $ 31,130 $ 125 $ 27,351 $ 54 Investments in operating leases 692 10,274 17 6,986 12 Total $ 2,251 $ 41,404 $ 142 $ 34,337 $ 66 Restricted cash and cash equivalents shown in the preceding tables represent collections from the underlying Net securitized assets and certain reserve deposits held by TMCC for the VIEs and is included as part of Restricted cash and cash equivalents on our Consolidated Balance Sheets. Net securitized assets shown in the preceding tables are presented net of deferred fees and costs, deferred income, accumulated depreciation and allowance for credit losses. Other assets represent accrued interests related to securitized retail finance receivables and used vehicles held-for-sale that were repossessed by or returned to TMCC for the benefit of the VIEs. The related debt of these consolidated VIEs is presented net of $ 1.6 billion of securities retained by TMCC at September 30, 2024 and March 31, 2024, respectively. Other liabilities represent accrued interest on the debt of the consolidated VIEs. The assets of the VIEs and the restricted cash and cash equivalents held by TMCC serve as the sole source of repayment for the asset-backed securities issued by these entities. Investors in the notes issued by the VIEs do not have recourse to us or our other assets, with the exception of customary representation and warranty repurchase provisions and indemnities. As the primary beneficiary of these entities, we are exposed to credit, residual value, interest rate, and prepayment risk from the Securitized Assets in the VIEs. However, our exposure to these risks did not change as a result of the transfer of the assets to the VIEs. We may also be exposed to interest rate risk arising from the secured notes issued by the VIEs. In addition, we entered into interest rate swaps with certain special purpose entities that issue variable rate debt. Under the terms of these swaps, the special purpose entities are obligated to pay TMCC a fixed rate of interest on certain payment dates in exchange for receiving a floating rate of interest on notional amounts equal to the outstanding balance of the secured debt. This arrangement enables the special purpose entities to mitigate the interest rate risk inherent in issuing variable rate debt that is secured by fixed rate Securitized Assets. Note 8 – Variable Interest Entities (Continued) The transfers of the Securitized Assets to the special purpose entities in our securitizations are considered to be sales for legal purposes. However, the Securitized Assets and the related debt remain on our Consolidated Balance Sheets. We recognize financing revenue on the Securitized Assets and interest expense on the secured debt issued by the special purpose entities. We also maintain an allowance for credit losses on the securitized retail finance receivables using a methodology consistent with that used for our non-securitized asset portfolio. The interest rate swaps between TMCC and the special purpose entities are considered intercompany transactions and therefore are eliminated in our consolidated financial statements. Amounts due from non-consolidated variable interest entities at September 30, 2024 and March 31, 2024 and revenues earned from non-consolidated variable interest entities for three and six months ended September 30, 2024 and 2023 were not significant.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 9 – Commitments and Contingencies Commitments and Guarantees We have entered into certain commitments and guarantees for which the maximum unfunded amounts are summarized in the table below: September 30, March 31, 2024 2024 Commitments: Credit facilities commitments with dealers $ 3,130 $ 3,244 Commitments under operating lease agreements 118 106 Total commitments 3,248 3,350 Guarantees of affiliate pollution control and solid waste disposal bonds 100 100 Total commitments and guarantees $ 3,348 $ 3,450 Wholesale financing is not considered to be a contractual commitment as the arrangements are not binding arrangements under which TMCC is required to perform. Commitments We provide fixed and variable rate working capital loans, revolving lines of credit, and real estate financing to dealers and various multi-franchise organizations referred to as dealer groups for facilities construction and refurbishment, working capital requirements, real estate purchases, business acquisitions and other general business purposes. These loans are typically secured with liens on real estate, vehicle inventory, and/or other dealership assets, as appropriate, and may be guaranteed by individual or corporate guarantees of affiliated dealers, dealer groups, or dealer principals. Although the loans are typically collateralized or guaranteed, the value of the underlying collateral or guarantees may not be sufficient to cover our exposure under such agreements. Our pricing reflects market conditions, the competitive environment, the level of support dealers provide our retail, lease and voluntary protection business and the creditworthiness of each dealer. Amounts drawn under these facilities are reviewed for collectability on a quarterly basis, in conjunction with our evaluation of the allowance for credit losses. In addition to the total commitments and guarantees in the preceding table, we have also extended credit facilities to affiliates as described in Note 12 – Related Party Transactions in our fiscal 2024 Form 10-K. Lease Commitments Our operating lease portfolio consists of real estate leases. We have a lease agreement through August 2032 with TMNA for our headquarters facility in Plano, Texas. Commitments under operating lease agreements in the preceding table include $ 58 million and $ 62 million for facilities leases with affiliates at September 30, 2024 and March 31, 2024, respectively. Lease terms may contain renewal and extension options or early termination features. Generally, these options do not impact the lease term because TMCC is not reasonably certain that it will exercise the options. These lease agreements do not impose restrictions on our ability to pay dividends, engage in debt or equity financing transactions or enter into further lease agreements, nor do they have residual value guarantees. We exclude from our Consolidated Balance Sheets leases with a term equal to one year or less and do not separate non-lease components from our real estate leases. T otal operating lease expense, including payments to affiliates for the first half and second quarter of fiscal 2025 and fiscal 2024 were not significant. Operating lease liabilities and right-of-use (“ROU”) assets are recognized at the lease commencement date based on the present value of the future minimum lease payments over the lease term. As the interest rate implicit in the lease contract is typically not readily determinable, we utilize our incremental borrowing rate at the lease commencement date for the duration of the lease term. As of September 30, 2024 and March 31, 2024 , operating lease liabilities and ROU assets related to our operating lease agreements for which we are the lessee were not significant. Note 9 – Commitments and Contingencies (Continued) Guarantees and Other Contingencies TMCC has guaranteed bond obligations totaling $ 100 million in principal that were issued by Putnam County, West Virginia and Gibson County, Indiana to finance the construction of pollution control facilities at manufacturing plants of certain TMCC affiliates. The bonds mature in the following fiscal years ending March 31: 2028 - $ 20 million; 2029 - $ 50 million; 2030 - $ 10 million; 2031 - $ 10 million; and 2032 - $ 10 million. TMCC would be required to perform under the guarantees in the event of non-payment on the bonds and other related obligations. TMCC is entitled to reimbursement by the applicable affiliates for any amounts paid. TMCC receives a nominal annual fee for guaranteeing such payments. TMCC has not been required to perform under any of these affiliate bond guarantees as of September 30, 2024 and March 31, 2024. Indemnification In the ordinary course of business, we enter into agreements containing indemnification provisions standard in the industry related to several types of transactions, including, but not limited to, debt funding, derivatives, securitization transactions, and our vendor, supplier and service agreements. Performance under these indemnities would generally occur upon a breach of the representations, warranties, covenants or other commitments made or given in the agreement, or as a result of a third-party claim. In addition, we have agreed in certain debt and derivative issuances, and subject to certain exceptions, to gross-up payments due to third parties in the event that withholding tax is imposed on such payments. In addition, certain of our funding arrangements may require us to pay lenders for increased costs due to certain changes in laws or regulations. Due to the difficulty in predicting events which could cause a breach of the indemnification provisions or trigger a gross-up or other payment obligation, we are not able to estimate our maximum exposure to future payments that could result from claims made under such provisions. We have not made any material payments in the past as a result of these provisions, and as of September 30, 2024, we determined that it is not probable that we will be required to make any material payments in the future. As of September 30, 2024 and March 31, 2024 , no amounts have been recorded under these indemnification provisions. L itigation and Governmental Proceedings Various legal actions, governmental proceedings and other claims are pending or may be instituted or asserted in the future against us with respect to matters arising in the ordinary course of business. Certain of these actions are or purport to be class action suits, seeking sizeable damages and/or changes in our business operations, policies and practices. Certain of these actions are similar to suits that have been filed against other financial institutions and captive finance companies. In addition, we are subject to governmental and regulatory examinations, information-gathering requests, and investigations from time to time at the state and federal levels. It is inherently difficult to predict the course of such legal actions and governmental inquiries. We perform periodic reviews of pending claims and actions to determine the probability of adverse verdicts and resulting amounts of liability. We establish accruals for legal claims when payments associated with the claims become probable and the costs can be reasonably estimated. When we are able, we also determine estimates of reasonable possibility of loss or range of loss, whether in excess of any related accrued liability or where there is no accrued liability. Given the inherent uncertainty associated with legal matters, the actual costs of resolving legal claims and associated costs of defense may be substantially higher or lower than the amounts for which accruals have been established. Based on available information and established accruals, we do not believe it is reasonably probable that the results of these proceedings, either individually or in the aggregate, will have a material adverse effect on our consolidated financial condition or results of operations.

Income Taxes

Income Taxes	6 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Note 1 0 – Income Taxes Our provision for income taxes was $ 137 million and $ 242 million for the three and six months ended September 30, 2024, respectively, compared to $ 63 million and $ 195 million for the same periods in fiscal 2024. Our effective tax rate was 24 percent for the three and six months ended September 30, 2024, compared to 26 percent and 25 percent for the same periods in fiscal 2024. The increase in the provision for income taxes for the three and six months ended September 30, 2024, compared to the same periods in fiscal 2024, was primarily due to the increase in income before income taxes. The lower effective tax rate for the three and six months ended September 30, 2024, compared to the same periods in fiscal 2024, was primarily attributable to the decrease in state tax provision in the current year and the valuation allowance against the deferred tax asset related to mark-to-market of investments in marketable securities recorded in fiscal 2024. Tax-related Contingencies As of September 30, 2024, we remain under IRS examination for fiscal 2018 through fiscal 2025. We periodically review our uncertain tax positions. Our assessment is based on many factors including any ongoing IRS audits. For the three months ended September 30, 2024, our assessment did not result in a material change in unrecognized tax benefits. Our deferred tax assets include the cumulative state net operating loss carry forwards, deferred deduction of allowance for credit losses and residual value loss estimates, mark-to-market adjustment of derivatives, and other deferred costs. The total deferred tax liability, net of these deferred tax assets, was $ 2.7 billion and $ 3.3 billion at September 30, 2024 and March 31, 2024 , respectively. Although realization of the deferred tax assets is not assured, management believes it is more likely than not that the deferred tax assets will be realized. The amount of the deferred tax assets considered realizable could be reduced if management’s estimates change.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Sep. 30, 2024
Related Party Transactions [Abstract]
Related Party Transactions	Note 1 1 – Related Party Transactions In April 2024, TMCC renewed a three-year revolving credit agreement with Toyota Motor Sales U.S.A., Inc. (“TMS”), pursuant to which TMCC is entitled to borrow a maximum amount of $ 5 billion. Except for the transaction noted above, there were no material changes to our related party agreements or relationships as described in our fiscal 2024 Form 10-K. The tables below show the financial statement line items and amounts included in our Consolidated Statements of Income and on our Consolidated Balance Sheets under various related party agreements or relationships: Three months ended Six months ended September 30, September 30, 2024 2023 2024 2023 Net financing revenues: Manufacturer's subvention and other revenues $ 239 $ 253 $ 464 $ 523 Depreciation on operating leases $ 4 $ ( 118 ) $ 21 $ ( 87 ) Interest expense: Credit support fees, interest and other expenses $ 28 $ 24 $ 57 $ 48 Voluntary protection contract revenues Voluntary protection contract revenues $ 42 $ 39 $ 83 $ 77 Investment and other income, net: Interest and other income $ 35 $ 11 $ 48 $ 19 Expenses: Operating and administrative $ 26 $ 22 $ 52 $ 46 September 30, March 31, 2024 2024 Assets: Finance receivables, net Accounts receivable $ 91 $ 49 Deferred retail subvention income $ ( 1,078 ) $ ( 953 ) Investments in operating leases, net Investments in operating leases, net $ ( 97 ) $ ( 80 ) Deferred lease subvention income $ ( 451 ) $ ( 323 ) Other assets Notes receivable $ 1,494 $ 1,724 Other receivables, net $ 73 $ 86 Liabilities: Other liabilities Unearned voluntary protection contract revenues $ 444 $ 433 Other payables, net $ 809 $ 771 Notes payable $ - $ 8 TMCC receives subvention payments from TMNA which result in a gross monthly subvention receivable. As of September 30, 2024 and March 31, 2024, the subvention receivable from TMNA was $ 101 million and $ 111 million , respectively. We have a master netting agreement with TMNA which allows us to net settle payments for shared services and subvention transactions. Under this agreement, as of September 30, 2024 and March 31, 2024 , respectively, we had a net amount payable to TMNA which is recorded in Other payables, net in Other liabilities.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 1 2 – Fair Value Measurements Recurring Fair Value Measurements Financial assets and financial liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The following tables summarize our financial assets and financial liabilities measured at fair value on a recurring basis by level within the fair value hierarchy except for certain investments that are measured at fair value using the net asset value per share (or its equivalent) as a practical expedient and are excluded from the leveling information provided in the tables below. Fair value amounts presented below are intended to permit reconciliation of the fair value hierarchy to the amounts presented on our Consolidated Balance Sheets. September 30, 2024 Counterparty netting & Fair Level 1 Level 2 Level 3 collateral value Investments in marketable securities: Available-for-sale debt securities: U.S. government and agency obligations $ 740 $ 4 $ - $ - $ 744 Foreign government and agency obligations - 14 - - 14 Municipal debt securities - 8 - - 8 Corporate debt securities - 439 - - 439 Mortgage-backed securities: U.S. government agency - 120 - - 120 Non-agency residential - 7 4 - 11 Non-agency commercial - 45 4 - 49 Asset-backed securities - 70 56 - 126 Available-for-sale debt securities total 740 707 64 - 1,511 Equity investments: Fixed income mutual funds: Fixed income mutual funds measured at 1 1,220 Total return bond funds 877 - - - 877 Equity mutual funds 1,173 - - - 1,173 Equity investments total 2,050 - - - 3,270 Investments in marketable securities total 2,790 707 64 - 4,781 Derivative assets: Interest rate swaps - 567 - - 567 Foreign currency swaps - 253 - - 253 Counterparty netting and collateral - - - ( 766 ) ( 766 ) Derivative assets total - 820 - ( 766 ) 54 Assets at fair value 2,790 1,527 64 ( 766 ) 4,835 Derivative liabilities: Interest rate swaps - ( 24 ) - - ( 24 ) Foreign currency swaps - ( 515 ) - - ( 515 ) Counterparty netting and collateral - - - 530 530 Liabilities at fair value - ( 539 ) - 530 ( 9 ) Net assets at fair value $ 2,790 $ 988 $ 64 $ ( 236 ) $ 4,826 1 Measured at net asset value and therefore excluded from leveling. Note 12 – Fair Value Measurements (Continued) March 31, 2024 Counterparty netting & Fair Level 1 Level 2 Level 3 collateral value Investments in marketable securities: Available-for-sale debt securities: U.S. government and agency obligations $ 693 $ 4 $ - $ - $ 697 Foreign government and agency obligations - 12 - - 12 Municipal debt securities - 7 - - 7 Corporate debt securities - 430 - - 430 Mortgage-backed securities: U.S. government agency - 118 - - 118 Non-agency residential - 7 4 - 11 Non-agency commercial - 46 9 - 55 Asset-backed securities - 82 56 - 138 Available-for-sale debt securities total 693 706 69 - 1,468 Equity investments: Fixed income mutual funds: Fixed income mutual funds measured at 1 1,134 Total return bond funds 830 - - - 830 Equity mutual funds 1,073 - - - 1,073 Equity investments total 1,903 - - - 3,037 Investments in marketable securities total 2,596 706 69 - 4,505 Derivative assets: Interest rate swaps - 1,149 - - 1,149 Foreign currency swaps - 89 - - 89 Counterparty netting and collateral - - - ( 1,197 ) ( 1,197 ) Derivative assets total - 1,238 - ( 1,197 ) 41 Assets at fair value 2,596 1,944 69 ( 1,197 ) 4,546 Derivative liabilities: Interest rate swaps - ( 52 ) - - ( 52 ) Foreign currency swaps - ( 918 ) - - ( 918 ) Counterparty netting and collateral - - - 947 947 Liabilities at fair value - ( 970 ) - 947 ( 23 ) Net assets at fair value $ 2,596 $ 974 $ 69 $ ( 250 ) $ 4,523 1 Measured at net asset value and therefore excluded from leveling. Level 3 Fair Value Measurements The Level 3 financial assets and liabilities recorded at fair value which are subject to recurring and nonrecurring fair value measurement, and the corresponding activity and change in the fair value measurements of these assets and liabilities, were not significant to our Consolidated Balance Sheets as of September 30, 2024 and March 31, 2024, or Consolidated Statements of Income for the three and six months ended September 30, 2024 and 2023. Nonrecurring Fair Value Measurements Nonrecurring fair value measurements include Level 3 net finance receivables that are not measured at fair value on a recurring basis but are subject to fair value adjustments utilizing the fair value of the underlying collateral when there is evidence of impairment. We did not have any significant nonrecurring fair value items as of September 30, 2024 and March 31, 2024. Note 12 – Fair Value Measurements (Continued) The following tables provide information about assets and liabilities not carried at fair value on a recurring basis on our Consolidated Balance Sheets: September 30, 2024 Carrying Total Fair value Level 1 Level 2 Level 3 value Financial assets Finance receivables Retail loan $ 87,262 $ - $ - $ 89,656 $ 89,656 Wholesale 6,369 - - 6,409 6,409 Real estate 5,192 - - 5,246 5,246 Working capital 4,707 - - 4,677 4,677 Financial liabilities Unsecured notes and loans payable $ 91,497 $ - $ 90,844 $ - $ 90,844 Secured notes and loans payable 34,459 - - 34,527 34,527 March 31, 2024 Carrying Total Fair value Level 1 Level 2 Level 3 value Financial assets Finance receivables Retail loan $ 85,886 $ - $ - $ 86,575 $ 86,575 Wholesale 6,690 - - 6,710 6,710 Real estate 4,900 - - 4,890 4,890 Working capital 4,531 - - 4,494 4,494 Financial liabilities Unsecured notes and loans payable $ 88,083 $ - $ 86,133 $ - $ 86,133 Secured notes and loans payable 34,337 - - 34,003 34,003 Accrued interest related to finance receivables is in Other assets on the Consolidated Balance Sheets; however, TMCC measures the fair value of each class of finance receivables using scheduled principal and interest payments. Therefore, accrued interest has been included in the carrying value of each class of finance receivables in the preceding tables, along with the finance receivables, deferred origination costs, deferred income, and allowance for credit losses. Finance receivables in the preceding tables exclude related party transactions which are classified as Level 3 within the fair value hierarchy. The preceding tables also exclude related party notes receivables and notes payables recorded in Other assets and Other liabilities on the Consolidated Balance Sheets which are classified as Level 3 within the fair value hierarchy. Refer to Note 11 - Related Party Transaction for additional information. For Cash and cash equivalents and Restricted cash and cash equivalents on our Consolidated Balance Sheets, the fair value approximates the carrying value and these instruments are classified as Level 1 within the fair value hierarchy.

Segment Information

Segment Information	6 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
Segment Information	Note 1 3 – Segment Information Financial information for our reportable operating segments, which includes allocated corporate expenses, is summarized as follows: Three months ended September 30, 2024 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 3,297 $ - $ - $ 3,297 Depreciation on operating leases 1,015 - - 1,015 Interest expense 1,584 - - 1,584 Net financing revenues 698 - - 698 Voluntary protection contract revenues - 300 - 300 Investment and other income, net 136 252 - 388 Net financing and other revenues 834 552 - 1,386 Expenses: Provision for credit losses 206 - - 206 Operating and administrative 332 121 - 453 Voluntary protection contract expenses and insurance losses - 161 - 161 Total expenses 538 282 - 820 Income before income taxes 296 270 - 566 Provision for income taxes 74 63 - 137 Net income $ 222 $ 207 $ - $ 429 Six months ended September 30, 2024 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 6,506 $ - $ - $ 6,506 Depreciation on operating leases 2,049 - - 2,049 Interest expense 3,027 - - 3,027 Net financing revenues 1,430 - - 1,430 Voluntary protection contract revenues - 595 - 595 Investment and other income, net 302 309 - 611 Net financing and other revenues 1,732 904 - 2,636 Expenses: Provision for credit losses 395 - - 395 Operating and administrative 659 234 - 893 Voluntary protection contract expenses and insurance losses - 320 - 320 Total expenses 1,054 554 - 1,608 Income before income taxes 678 350 - 1,028 Provision for income taxes 161 81 - 242 Net income $ 517 $ 269 $ - $ 786 Total assets at September 30, 2024 $ 145,636 $ 8,008 $ ( 93 ) $ 153,551 Note 13 – Segment Information (Continued) Three months ended September 30, 2023 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 2,986 $ - $ - $ 2,986 Depreciation on operating leases 918 - - 918 Interest expense 1,272 - - 1,272 Net financing revenues 796 - - 796 Voluntary protection contract revenues - 278 - 278 Investment and other income (loss), net 119 ( 137 ) - ( 18 ) Net financing and other revenues 915 141 - 1,056 Expenses: Provision for credit losses 221 - - 221 Operating and administrative 332 117 - 449 Voluntary protection contract expenses and insurance losses - 145 - 145 Total expenses 553 262 - 815 Income (loss) before income taxes 362 ( 121 ) - 241 Provision (benefit) for income taxes 83 ( 20 ) - 63 Net income (loss) $ 279 $ ( 101 ) $ - $ 178 Six months ended September 30, 2023 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 5,890 $ - $ - $ 5,890 Depreciation on operating leases 2,073 - - 2,073 Interest expense 2,171 - - 2,171 Net financing revenues 1,646 - - 1,646 Voluntary protection contract revenues - 549 - 549 Investment and other income (loss), net 233 ( 89 ) - 144 Net financing and other revenues 1,879 460 - 2,339 Expenses: Provision for credit losses 386 - - 386 Operating and administrative 666 231 - 897 Voluntary protection contract expenses and insurance losses - 291 - 291 Total expenses 1,052 522 - 1,574 Income (loss) before income taxes 827 ( 62 ) - 765 Provision (benefit) for income taxes 202 ( 7 ) - 195 Net income (loss) $ 625 $ ( 55 ) $ - $ 570 Total assets at September 30, 2023 $ 133,013 $ 6,780 $ ( 78 ) $ 139,715 Note 13 – Segment Information (Continued) Voluntary protection operations – Contract revenues For the three and six months ended September 30, 2024, approximately 86 percent and 85 percent, respectively, of voluntary protection contract revenues in the Voluntary protection operations segment were accounted for under the guidance for revenue from contracts with customers, compared to 84 percent for the same periods in fiscal 2024. The Voluntary protection operations segment defers contractually determined incentives paid to dealers as contract costs for selling voluntary protection products. These costs are recorded in Other assets on our Consolidated Balance Sheets and are amortized to Operating and administrative expenses in the Consolidated Statements of Income using a methodology consistent with the recognition of revenue. The amount of capitalized dealer incentives and the related amortization was not significant to our consolidated financial statements as of and for the three and six months ended September 30, 2024 and 2023 . We had $ 3.1 billion and $ 2.9 billion of unearned voluntary protection contract revenues from contracts with customers included in Other liabilities on our Consolidated Balance Sheets as of March 31, 2024 and March 31, 2023, respectively. We recognized $ 234 million and $ 466 million of these balances in voluntary protection contract revenues in our Consolidated Statements of Income during the three and six months ended September 30, 2024, respectively, compared to $ 212 million and $ 421 million during the same periods in fiscal 2024. As of September 30, 2024, we had unearned voluntary protection contract revenues of $ 3.3 billion included in Other liabilities on our Consolidated Balance Sheets, and with respect to this balance we expect to recognize revenue of $ 516 million during fiscal 2025 , and $ 2.8 billion thereafter . At September 30, 2023, we had unearned voluntary protection contract revenues of $ 3.0 billion associated with outstanding contracts.

Interim Financial Data (Policie

Interim Financial Data (Policies)	6 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The information furnished in these unaudited interim consolidated financial statements as of and for the three and six months ended September 30, 2024 and 2023 has been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). In the fourth quarter of fiscal 2024, we changed our accounting method for investment tax credits from the flow-through method to the deferral method. As such, we have retrospectively applied the impact of the accounting method change to conform certain prior period amounts to current period presentation. Refer to Note 1 – Basis of Presentation and Significant Accounting Policies and Note 15 - Selected Quarterly Financial Data (unaudited) in our fiscal 2024 Form 10-K for additional information. In the opinion of management, the unaudited consolidated 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, 2024, do not necessarily indicate the results which may be expected for the full fiscal year ending March 31, 2025 (“fiscal 2025”). These financial statements should be read in conjunction with the Consolidated Financial Statements and Notes to 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, 2024 (“fiscal 2024 ”), which was filed with the Securities and Exchange Commission on June 4, 2024. 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.
Recently Adopted Accounting Guidance	Recently Adopted Accounting Guidance There were no new accounting pronouncements adopted in the first half and second quarter of fiscal 2025 .
Accounting Guidance Issued But Not Yet Adopted	Accounting Guidance Issued But Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280) , to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU is effective for us on March 31, 2025, with early adoption permitted. We are currently evaluating the impact of this standard on our consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) , requiring more granular disclosure of the components of income taxes. This ASU is effective for us on March 31, 2026, with early adoption permitted. We are currently evaluating the impact of this standard on our consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40) , requiring disclosure in the notes to the financial statements for specified information about certain costs and expenses. This ASU is effective for us on March 31, 2028, with early adoption permitted. We are currently evaluating the impact of this standard on our consolidated financial statements and related disclosures.
Other Matters	Other Matters We have continued to evaluate the private label financial services business, including partnering with or transitioning the business to our affiliates. In August 2024, management presented a plan to the Board of Directors (“Board”) of TMCC to transition the origination and financing of new automotive finance and lease contracts under the Mazda Financial Services (“MFS”) Agreement to Toyota Financial Savings Bank (“TFSB”), an unconsolidated affiliate of TMCC, subject to the successful completion of a trial run with certain Mazda dealers commencing in the third quarter of fiscal year 2025 (the “MFS Transition Plan”). As it was deemed to be in the best interests of the Corporation and its sole shareholder, Toyota Financial Services International Corporation, the Board approved the MFS Transition Plan, including all costs and expenses incurred with the transition, which are not expected to be significant. No existing TMCC private label assets or liabilities will be transitioned to or acquired by TFSB pursuant to the MFS Transition Plan. In connection with the MFS Transition Plan, TMCC has entered into certain servicing agreements with TFSB to service the retail and lease contracts originated under the MFS Agreement by TFSB. TMCC will continue to offer voluntary protection products to MFS customers.
Investments in Marketable Securities	Investments in marketable securities consist of debt securities and equity investments. We classify all of our debt securities as available-for-sale (“AFS”). Except when the fair value option is elected, AFS debt securities are recorded at fair value with unrealized gains or losses included in accumulated other comprehensive income (“AOCI”), net of applicable taxes. Interest income is recognized on an accrual basis and determined using the effective interest method. Realized gains and losses from sales of AFS debt securities are determined using the specific identification method or first in first out method. Dividend income, interest income, and realized gains and losses from the sales of AFS debt securities are included in Investment and other income, net in our Consolidated Statements of Income. We elected the fair value option for certain debt securities held within one of our investment portfolios for operational ease given the size and composition of this portfolio. All debt securities within this specific portfolio are recorded at fair value with changes in fair value included in Investment and other income, net in our Consolidated Statements of Income.
Finance Receivables, Net	Finance receivables, net consists of the retail loan and dealer products portfolio segments, and includes deferred origination costs, deferred income, and allowance for credit losses. Finance receivables, net also includes securitized retail receivables, which represent retail receivables that have been sold for legal purposes to securitization trusts but continue to be included in our consolidated financial statements, as discussed further in Note 8 – Variable Interest Entities . Cash flows from these securitized retail receivables are available only for the repayment of debt issued by these trusts and other obligations arising from the securitization transactions. They are not available for payment of our other obligations or to satisfy claims of our other creditors.
Investments in Operating Leases, Net	Investments in operating leases, net consists of vehicle lease contracts acquired from dealers, and includes deferred origination fees and costs, deferred income, investment tax credits, and accumulated depreciation. Non-cash investing activities related to investment tax credits on investments in operating leases for the six months ended September 30, 2024 and 2023 were $ 281 million and $ 84 million , respectively. Securitized investments in operating leases represent beneficial interests in a pool of certain vehicle leases that have been sold for legal purposes to securitization trusts but continue to be included in our consolidated financial statements as discussed further in Note 8 - Variable Interest Entities . Cash flows from these securitized investments in operating leases are available only for the repayment of debt issued by these trusts and other obligations arising from the securitization transactions. They are not available for payment of our other obligations or to satisfy claims of our other creditors.
Derivative Instruments	Derivative Instruments Our liabilities consist mainly of fixed and variable rate debt, denominated in U.S. dollars and various other currencies, which we issue in the global capital markets, while our assets consist primarily of U.S. dollar denominated, fixed rate receivables. We enter into interest rate swaps, and foreign currency swaps to economically hedge the interest rate and foreign currency risks that result from the different characteristics of our assets and liabilities. Our use of derivative transactions is intended to reduce long-term fluctuations in the fair value of assets and liabilities caused by market movements. All of our derivatives are categorized as not designated for hedge accounting, and all of our derivative activities are authorized and monitored by our management and our Asset-Liability Committee which provides a framework for financial controls and governance to manage market risk. All derivative instruments are recorded on the balance sheet at fair value, taking into consideration the effects of legally enforceable master netting agreements that allow us to net settle asset and liability positions and offset cash collateral with the same counterparty on a net basis. Changes in the fair value of our derivative instruments are recorded in Interest expense in our Consolidated Statements of Income. The derivative instruments are included as a component of Other assets or Other liabilities on our Consolidated Balance Sheets.
Offsetting of Derivatives	Offsetting of Derivatives Accounting guidance permits the net presentation on our Consolidated Balance Sheets of derivative receivables and derivative payables with the same counterparty and the related cash collateral when a legally enforceable master netting agreement exists, or when the derivative receivables and derivative payables meet all the conditions for the right of setoff to exist. When we meet this condition, we elect to present such balances on a net basis. Over-the-Counter (“OTC”) Derivatives Our International Swaps and Derivatives Association Master Agreements are our master netting agreements which permit multiple transactions to be cancelled and settled with a single net balance paid to either party for our OTC derivatives. The master netting agreements also contain reciprocal collateral agreements which require the transfer of cash collateral to the party in a net asset position across all transactions. Our collateral agreements with substantially all our counterparties include a zero threshold, full collateralization arrangement. Although we have daily valuation and collateral exchange arrangements with all of our counterparties, due to the time required to move collateral, there may be a delay of up to one day between the exchange of collateral and the valuation of our derivatives. We would not be required to post additional collateral to the counterparties with whom we were in a net liability position at September 30, 2024 , if our credit ratings were to decline, since we fully collateralize without regard to credit ratings with these counterparties. In addition, as our collateral agreements include legal right of offset provisions, collateral amounts are netted against derivative assets or derivative liabilities, and the net amount is included in Other assets or Other liabilities on our Consolidated Balance Sheets.
Centrally Cleared Derivatives	Centrally Cleared Derivatives For our centrally cleared derivatives, variation margin payments are legally characterized as settlement payments and accounted for with corresponding derivative positions as one unit of account as opposed to collateral. Initial margin payments are separately recorded in Other assets on our Consolidated Balance Sheets. We perform valuation and margin exchange on a daily basis. Similar to the OTC swaps, there may be a delay of up to one day between the exchange of margin payments and the valuation of our derivatives.
Consolidated Variable Interest Entities	We use one or more special purpose entities that are considered Variable Interest Entities (“VIEs”) to issue asset-backed securities to third-party bank-sponsored asset-backed securitization vehicles and to investors in securitization transactions. The securities issued by these VIEs are backed by the cash flows related to retail finance receivables and beneficial interests in investments in operating leases (“Securitized Assets”). We hold variable interests in the VIEs that could potentially be significant to the VIEs. We determined that we are the primary beneficiary of the securitization trusts because (i) our servicing responsibilities for the Securitized Assets give us the power to direct the activities that most significantly impact the performance of the VIEs, and (ii) our variable interests in the VIEs give us the obligation to absorb losses and the right to receive residual returns that could potentially be significant.
Revenue Recognition	Voluntary protection operations – Contract revenues The Voluntary protection operations segment defers contractually determined incentives paid to dealers as contract costs for selling voluntary protection products. These costs are recorded in Other assets on our Consolidated Balance Sheets and are amortized to Operating and administrative expenses in the Consolidated Statements of Income using a methodology consistent with the recognition of revenue. The amount of capitalized dealer incentives and the related amortization was not significant to our consolidated financial statements as of and for the three and six months ended September 30, 2024 and 2023 .

Investments in Marketable Sec_2

Investments in Marketable Securities (Tables)	6 Months Ended
	Sep. 30, 2024
Marketable Securities [Abstract]
Summary of Investments in Marketable Securities	Investments in marketable securities consisted of the following: September 30, 2024 Amortized Unrealized Unrealized Fair cost gains losses value Available-for-sale debt securities: U.S. government and agency obligations $ 805 $ 4 $ ( 65 ) $ 744 Foreign government and agency obligations 14 1 ( 1 ) 14 Municipal debt securities 8 1 ( 1 ) 8 Corporate debt securities 469 5 ( 35 ) 439 Mortgage-backed securities: U.S. government agency 121 1 ( 2 ) 120 Non-agency residential 12 - ( 1 ) 11 Non-agency commercial 55 - ( 6 ) 49 Asset-backed securities 128 1 ( 3 ) 126 Total available-for-sale debt securities $ 1,612 $ 13 $ ( 114 ) $ 1,511 Equity investments 3,270 Total investments in marketable securities $ 4,781 March 31, 2024 Amortized Unrealized Unrealized Fair cost gains losses value Available-for-sale debt securities: U.S. government and agency obligations $ 783 $ 1 $ ( 87 ) $ 697 Foreign government and agency obligations 13 - ( 1 ) 12 Municipal debt securities 8 - ( 1 ) 7 Corporate debt securities 477 2 ( 49 ) 430 Mortgage-backed securities: U.S. government agency 123 - ( 5 ) 118 Non-agency residential 12 - ( 1 ) 11 Non-agency commercial 64 - ( 9 ) 55 Asset-backed securities 142 1 ( 5 ) 138 Total available-for-sale debt securities $ 1,622 $ 4 $ ( 158 ) $ 1,468 Equity investments 3,037 Total investments in marketable securities $ 4,505
Schedule of Continuous Unrealized Losses on Available-For-Sale Debt Securities	The following table presents the aggregate fair value and unrealized losses on AFS debt securities in a continuous unrealized loss position: September 30, 2024 Less than 12 months 12 months or longer Total Available-for-sale debt securities: Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses U.S. government and agency obligations $ 44 $ - $ 572 $ ( 65 ) $ 616 $ ( 65 ) Foreign government and agency obligations - - 5 ( 1 ) 5 ( 1 ) Municipal debt securities - - 2 ( 1 ) 2 ( 1 ) Corporate debt securities 4 - 319 ( 35 ) 323 ( 35 ) Mortgage-backed securities U.S. Government agency - - 40 ( 2 ) 40 ( 2 ) Non-agency residential - - 7 ( 1 ) 7 ( 1 ) Non-agency commercial - - 48 ( 6 ) 48 ( 6 ) Asset-backed securities 3 - 51 ( 3 ) 54 ( 3 ) Total available-for-sale debt securities $ 51 $ - $ 1,044 $ ( 114 ) $ 1,095 $ ( 114 ) March 31, 2024 Less than 12 months 12 months or longer Total Available-for-sale debt securities: Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses U.S. government and agency obligations $ 317 $ ( 13 ) $ 336 $ ( 74 ) $ 653 $ ( 87 ) Foreign government and agency obligations 1 - 8 ( 1 ) 9 ( 1 ) Municipal debt securities - - 2 ( 1 ) 2 ( 1 ) Corporate debt securities 31 ( 3 ) 339 ( 46 ) 370 ( 49 ) Mortgage-backed securities U.S. Government agency 51 ( 1 ) 49 ( 4 ) 100 ( 5 ) Non-agency residential 1 - 7 ( 1 ) 8 ( 1 ) Non-agency commercial 1 - 53 ( 9 ) 54 ( 9 ) Asset-backed securities 17 - 58 ( 5 ) 75 ( 5 ) Total available-for-sale debt securities $ 419 $ ( 17 ) $ 852 $ ( 141 ) $ 1,271 $ ( 158 )
Schedule of Gains and Losses on Investments in Marketable Securities Presented in Our Consolidated Statement of Income	The following table represents gains and losses on our investments in marketable securities presented in our Consolidated Statements of Income: Three months ended Six months ended September 30, September 30, 2024 2023 2024 2023 Available-for-sale debt securities: Unrealized gains (losses) on securities for which the fair value option was elected $ 32 $ ( 38 ) $ 27 $ ( 50 ) Realized gains (losses) on sales, net $ - $ ( 2 ) $ ( 4 ) $ ( 2 ) Equity investments: Unrealized gains (losses) $ 170 $ ( 146 ) $ 184 $ ( 134 ) Realized losses on sales, net $ ( 10 ) $ - $ ( 16 ) $ -
Summary of Contractual Maturities of Available-For-Sale Debt Securities	The amortized cost and fair value by contractual maturities of available-for-sale debt securities are summarized in the following table. Actual maturities may differ from contractual maturities because certain borrowers have the right to call or prepay certain obligations. September 30, 2024 Amortized cost Fair value Available-for-sale debt securities: Due within 1 year $ 60 $ 59 Due after 1 year through 5 years 342 336 Due after 5 years through 10 years 443 433 Due after 10 years 451 377 Mortgage-backed and asset-backed securities 1 316 306 Total $ 1,612 $ 1,511 1. Mortgage-backed and asset-backed securities are shown separately from other maturity groupings as these securities have multiple maturity dates.

Finance Receivables, Net (Table

Finance Receivables, Net (Tables)	6 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Net Financing Receivables	Finance receivables, net consisted of the following: September 30, March 31, 2024 2024 Retail receivables 1 $ 88,860 $ 87,150 Dealer financing 16,380 16,181 105,240 103,331 Deferred origination costs 1,339 1,399 Deferred income ( 1,686 ) ( 1,424 ) Allowance for credit losses Retail receivables ( 1,563 ) ( 1,549 ) Dealer financing ( 93 ) ( 88 ) Total allowance for credit losses ( 1,656 ) ( 1,637 ) Finance receivables, net $ 103,237 $ 101,669 1 Includes gross securitized retail receivables of $ 32.5 billion and $ 31.5 billion as of September 30, 2024 and March 31, 2024 , respectively.
Schedule of Amortized Cost Basis of Retail Loan Portfolio and Dealer Products Portfolio by Credit Quality Indicator	The following tables present the amortized cost basis of our retail loan portfolio by origination fiscal year by credit quality indicator based on number of days past due: Amortized Cost Basis by Origination Fiscal Year at September 30, 2024 2025 2024 2023 2022 2021 2020 and Prior Total Aging of finance receivables: Current $ 18,204 $ 29,732 $ 18,148 $ 11,827 $ 6,140 $ 1,881 $ 85,932 30-59 days past due 92 428 506 409 225 102 1,762 60-89 days past due 26 138 162 125 68 35 554 90 days or greater past due 9 70 81 56 29 20 265 Total $ 18,331 $ 30,368 $ 18,897 $ 12,417 $ 6,462 $ 2,038 $ 88,513 Gross Charge-Offs $ 1 $ 105 $ 161 $ 104 $ 41 $ 23 $ 435 Amortized Cost Basis by Origination Fiscal Year at March 31, 2024 2024 2023 2022 2021 2020 2019 and Prior Total Aging of finance receivables: Current $ 35,407 $ 22,473 $ 15,041 $ 8,539 $ 2,654 $ 748 $ 84,862 30-59 days past due 301 488 426 242 92 53 1,602 60-89 days past due 77 143 119 68 27 17 451 90 days or greater past due 38 69 53 29 10 11 210 Total $ 35,823 $ 23,173 $ 15,639 $ 8,878 $ 2,783 $ 829 $ 87,125 Gross Charge-Offs $ 38 $ 297 $ 258 $ 111 $ 38 $ 34 $ 776 The following tables present the amortized cost basis of our dealer products portfolio by credit quality indicator based on internal risk assessments by origination fiscal year: Amortized Cost Basis by Origination Fiscal Year at September 30, 2024 2025 2024 2023 2022 2021 2020 and Prior Revolving loans Total Wholesale Performing $ - $ - $ - $ - $ - $ - $ 5,952 $ 5,952 Credit Watch - - - - - - 379 379 At Risk - - - - - - 21 21 Default - - - - - - 8 8 Wholesale total $ - $ - $ - $ - $ - $ - $ 6,360 $ 6,360 Real estate Performing $ 713 $ 1,094 $ 783 $ 701 $ 800 $ 735 $ 208 $ 5,034 Credit Watch 70 46 - 28 15 - - 159 At Risk - 9 - - - 2 - 11 Default 5 - - - - - - 5 Real estate total $ 788 $ 1,149 $ 783 $ 729 $ 815 $ 737 $ 208 $ 5,209 Working Capital Performing $ 391 $ 627 $ 286 $ 178 $ 112 $ 231 $ 2,939 $ 4,764 Credit Watch 11 12 14 4 - - 2 43 At Risk - - 3 - - - 1 4 Default - - - - - - - - Working capital total $ 402 $ 639 $ 303 $ 182 $ 112 $ 231 $ 2,942 $ 4,811 Total $ 1,190 $ 1,788 $ 1,086 $ 911 $ 927 $ 968 $ 9,510 $ 16,380 For the three and six months ended September 30, 2024 , there were no gross charge-offs in our dealer product portfolio. Amortized Cost Basis by Origination Fiscal Year at March 31, 2024 2024 2023 2022 2021 2020 2019 and Prior Revolving loans Total Wholesale Performing $ - $ - $ - $ - $ - $ - $ 6,287 $ 6,287 Credit Watch - - - - - - 238 238 At Risk - - - - - - 112 112 Default - - - - - - 36 36 Wholesale total $ - $ - $ - $ - $ - $ - $ 6,673 $ 6,673 Real estate Performing $ 1,224 $ 883 $ 815 $ 860 $ 128 $ 784 $ 3 $ 4,697 Credit Watch 58 37 44 6 - - - 145 At Risk 8 1 10 - - 2 - 21 Default 4 2 - 25 - - - 31 Real estate total $ 1,294 $ 923 $ 869 $ 891 $ 128 $ 786 $ 3 $ 4,894 Working Capital Performing $ 769 $ 414 $ 235 $ 122 $ 105 $ 159 $ 2,715 $ 4,519 Credit Watch 20 41 13 - - - 2 76 At Risk - 3 - - 2 - 1 6 Default - - - 13 - - - 13 Working capital total $ 789 $ 458 $ 248 $ 135 $ 107 $ 159 $ 2,718 $ 4,614 Total $ 2,083 $ 1,381 $ 1,117 $ 1,026 $ 235 $ 945 $ 9,394 $ 16,181 For the twelve months ended March 31, 2024 , there were no gross charge-offs in our dealer product portfolio.
Aging of Amortized Cost Basis of Finance Receivables by Class	The following tables present the aging of the amortized cost basis of our finance receivables by class: September 30, 2024 30 - 59 Days 60 - 89 Days 90 Days or Total Past Current Total Finance 90 Days or greater past due and accruing Retail loan $ 1,762 $ 554 $ 265 $ 2,581 $ 85,932 $ 88,513 $ 173 Wholesale 1 - - 1 6,359 6,360 - Real estate - - - - 5,209 5,209 - Working capital 25 - - 25 4,786 4,811 - Total $ 1,788 $ 554 $ 265 $ 2,607 $ 102,286 $ 104,893 $ 173 March 31, 2024 30 - 59 Days 60 - 89 Days 90 Days or Total Past Current Total Finance 90 Days or greater past due and accruing Retail loan $ 1,602 $ 451 $ 210 $ 2,263 $ 84,862 $ 87,125 $ 142 Wholesale - - - - 6,673 6,673 - Real estate - - - - 4,894 4,894 - Working capital - - - - 4,614 4,614 - Total $ 1,602 $ 451 $ 210 $ 2,263 $ 101,043 $ 103,306 $ 142

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	6 Months Ended
	Sep. 30, 2024
Loans and Leases Receivable Disclosure [Abstract]
Allowance for Credit Losses and Finance Receivables by Portfolio Segment	The following tables provide information related to our allowance for credit losses for finance receivables and certain off-balance sheet lending commitments by portfolio segment: Three months ended September 30, 2024 Retail loan Dealer products Total Beginning balance, July 1, 2024 $ 1,559 $ 146 $ 1,705 Charge-offs ( 237 ) - ( 237 ) Recoveries 35 - 35 Provision for credit losses 206 - 206 Ending balance, September 30, 2024 ¹ $ 1,563 $ 146 $ 1,709 Six months ended September 30, 2024 Retail loan Dealer products Total Beginning balance, April 1, 2024 $ 1,549 $ 135 $ 1,684 Charge-offs ( 435 ) - ( 435 ) Recoveries 65 - 65 Provision for credit losses 384 11 395 Ending balance, September 30, 2024 ¹ $ 1,563 $ 146 $ 1,709 1 Ending balance includes $ 53 million of allowance for credit losses recorded in Other liabilities on the Consolidated Balance Sheet which is related to off-balance sheet lending commitments in the dealer products portfolio. Three months ended September 30, 2023 Retail loan Dealer products Total Beginning balance, July 1, 2023 $ 1,483 $ 90 $ 1,573 Charge-offs ( 191 ) - ( 191 ) Recoveries 25 - 25 Provision for credit losses 212 9 221 Ending balance, September 30, 2023 ¹ $ 1,529 $ 99 $ 1,628 Six months ended September 30, 2023 Retail loan Dealer products Total Beginning balance, April 1, 2023 $ 1,430 $ 83 $ 1,513 Charge-offs ( 325 ) - ( 325 ) Recoveries 54 - 54 Provision for credit losses 370 16 386 Ending balance, September 30, 2023 ¹ $ 1,529 $ 99 $ 1,628 1 Ending balance includes $ 33 million of allowance for credit losses recorded in Other liabilities on the Consolidated Balance Sheet which is related to off-balance sheet lending commitments in the dealer products portfolio.

Investments in Operating Leas_2

Investments in Operating Leases, Net (Tables)	6 Months Ended
	Sep. 30, 2024
Leases, Operating [Abstract]
Investments in Operating Leases, Net	Investments in operating leases, net consisted of the following: September 30, March 31, 2024 2024 Investments in operating leases 1 $ 35,290 $ 35,383 Deferred income ( 867 ) ( 609 ) Accumulated depreciation ( 5,713 ) ( 6,761 ) Investments in operating leases, net $ 28,710 $ 28,013 1 Includes gross securitized investments in operating leases of $ 11.9 billion and $ 13.8 billion as of September 30, 2024 and March 31, 2024 , respectively.

Derivatives, Hedging Activiti_2

Derivatives, Hedging Activities and Interest Expense (Tables)	6 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Activity Impact on Consolidated Balance Sheet	The following tables show the financial statement line item and amount of our derivative assets and liabilities that are reported on our Consolidated Balance Sheets: September 30, 2024 March 31, 2024 Fair Fair Notional value Notional value Other assets: Interest rate swaps $ 50,878 $ 567 $ 71,830 $ 1,149 Foreign currency swaps 4,859 253 1,759 89 Total $ 55,737 $ 820 $ 73,589 $ 1,238 Counterparty netting ( 309 ) ( 346 ) Collateral held ( 457 ) ( 851 ) Carrying value of derivative contracts – Other assets $ 54 $ 41 Other liabilities: Interest rate swaps $ 61,271 $ 24 $ 38,920 $ 52 Foreign currency swaps 5,337 515 7,433 918 Total $ 66,608 $ 539 $ 46,353 $ 970 Counterparty netting ( 309 ) ( 346 ) Collateral posted ( 221 ) ( 601 ) Carrying value of derivative contracts – Other liabilities $ 9 $ 23
Components of Interest Expense	The following table summarizes the components of interest expense, including the location and amount of gains and losses on derivative instruments and related hedged items, as reported in our Consolidated Statements of Income: Three months ended Six months ended September 30, September 30, 2024 2023 2024 2023 Interest expense on debt $ 1,424 $ 1,189 $ 2,829 $ 2,275 Interest income on derivatives ( 39 ) ( 205 ) ( 97 ) ( 414 ) Interest expense on debt and derivatives 1,385 984 2,732 1,861 Losses (gains) on debt denominated in 374 ( 280 ) 394 ( 243 ) (Gains) losses on foreign currency swaps ( 606 ) 253 ( 599 ) 297 Losses on U.S. dollar interest rate swaps 431 315 500 256 Total interest expense $ 1,584 $ 1,272 $ 3,027 $ 2,171

Debt and Credit Facilities (Tab

Debt and Credit Facilities (Tables)	6 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Debt and Related Weighted Average Contractual Interest Rates	Debt and the related weighted average contractual interest rates are summarized as follows: September 30, 2024 March 31, 2024 Face value Carrying value Weighted average Face value Carrying value Weighted average Unsecured notes and loans payable $ 91,991 $ 91,497 4.17 % $ 88,576 $ 88,083 4.19 % Secured notes and loans payable 34,513 34,459 4.85 % 34,387 34,337 4.64 % Total debt $ 126,504 $ 125,956 4.36 % $ 122,963 $ 122,420 4.32 %

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Sep. 30, 2024
Variable Interest Entities [Abstract]
Schedule of Assets and Liabilities related to Variable Interest Entities Securitization Transactions	The following tables show the assets and liabilities related to our VIE securitization transactions that are included on our Consolidated Balance Sheets: September 30, 2024 VIE Assets VIE Liabilities Restricted cash and cash equivalents Net securitized assets Other Debt Other Retail finance receivables $ 1,551 $ 32,137 $ 137 $ 28,305 $ 49 Investments in operating leases 632 9,027 23 6,154 9 Total $ 2,183 $ 41,164 $ 160 $ 34,459 $ 58 March 31, 2024 VIE Assets VIE Liabilities Restricted cash and cash equivalents Net securitized assets Other Debt Other Retail finance receivables $ 1,559 $ 31,130 $ 125 $ 27,351 $ 54 Investments in operating leases 692 10,274 17 6,986 12 Total $ 2,251 $ 41,404 $ 142 $ 34,337 $ 66

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Guarantees	We have entered into certain commitments and guarantees for which the maximum unfunded amounts are summarized in the table below: September 30, March 31, 2024 2024 Commitments: Credit facilities commitments with dealers $ 3,130 $ 3,244 Commitments under operating lease agreements 118 106 Total commitments 3,248 3,350 Guarantees of affiliate pollution control and solid waste disposal bonds 100 100 Total commitments and guarantees $ 3,348 $ 3,450

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Sep. 30, 2024
Related Party Transactions [Abstract]
Related Party Transactions Included in Consolidated Statements of Income	The tables below show the financial statement line items and amounts included in our Consolidated Statements of Income and on our Consolidated Balance Sheets under various related party agreements or relationships: Three months ended Six months ended September 30, September 30, 2024 2023 2024 2023 Net financing revenues: Manufacturer's subvention and other revenues $ 239 $ 253 $ 464 $ 523 Depreciation on operating leases $ 4 $ ( 118 ) $ 21 $ ( 87 ) Interest expense: Credit support fees, interest and other expenses $ 28 $ 24 $ 57 $ 48 Voluntary protection contract revenues Voluntary protection contract revenues $ 42 $ 39 $ 83 $ 77 Investment and other income, net: Interest and other income $ 35 $ 11 $ 48 $ 19 Expenses: Operating and administrative $ 26 $ 22 $ 52 $ 46
Related Party Transactions Included in Consolidated Balance Sheets	September 30, March 31, 2024 2024 Assets: Finance receivables, net Accounts receivable $ 91 $ 49 Deferred retail subvention income $ ( 1,078 ) $ ( 953 ) Investments in operating leases, net Investments in operating leases, net $ ( 97 ) $ ( 80 ) Deferred lease subvention income $ ( 451 ) $ ( 323 ) Other assets Notes receivable $ 1,494 $ 1,724 Other receivables, net $ 73 $ 86 Liabilities: Other liabilities Unearned voluntary protection contract revenues $ 444 $ 433 Other payables, net $ 809 $ 771 Notes payable $ - $ 8

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables summarize our financial assets and financial liabilities measured at fair value on a recurring basis by level within the fair value hierarchy except for certain investments that are measured at fair value using the net asset value per share (or its equivalent) as a practical expedient and are excluded from the leveling information provided in the tables below. Fair value amounts presented below are intended to permit reconciliation of the fair value hierarchy to the amounts presented on our Consolidated Balance Sheets. September 30, 2024 Counterparty netting & Fair Level 1 Level 2 Level 3 collateral value Investments in marketable securities: Available-for-sale debt securities: U.S. government and agency obligations $ 740 $ 4 $ - $ - $ 744 Foreign government and agency obligations - 14 - - 14 Municipal debt securities - 8 - - 8 Corporate debt securities - 439 - - 439 Mortgage-backed securities: U.S. government agency - 120 - - 120 Non-agency residential - 7 4 - 11 Non-agency commercial - 45 4 - 49 Asset-backed securities - 70 56 - 126 Available-for-sale debt securities total 740 707 64 - 1,511 Equity investments: Fixed income mutual funds: Fixed income mutual funds measured at 1 1,220 Total return bond funds 877 - - - 877 Equity mutual funds 1,173 - - - 1,173 Equity investments total 2,050 - - - 3,270 Investments in marketable securities total 2,790 707 64 - 4,781 Derivative assets: Interest rate swaps - 567 - - 567 Foreign currency swaps - 253 - - 253 Counterparty netting and collateral - - - ( 766 ) ( 766 ) Derivative assets total - 820 - ( 766 ) 54 Assets at fair value 2,790 1,527 64 ( 766 ) 4,835 Derivative liabilities: Interest rate swaps - ( 24 ) - - ( 24 ) Foreign currency swaps - ( 515 ) - - ( 515 ) Counterparty netting and collateral - - - 530 530 Liabilities at fair value - ( 539 ) - 530 ( 9 ) Net assets at fair value $ 2,790 $ 988 $ 64 $ ( 236 ) $ 4,826 1 Measured at net asset value and therefore excluded from leveling. March 31, 2024 Counterparty netting & Fair Level 1 Level 2 Level 3 collateral value Investments in marketable securities: Available-for-sale debt securities: U.S. government and agency obligations $ 693 $ 4 $ - $ - $ 697 Foreign government and agency obligations - 12 - - 12 Municipal debt securities - 7 - - 7 Corporate debt securities - 430 - - 430 Mortgage-backed securities: U.S. government agency - 118 - - 118 Non-agency residential - 7 4 - 11 Non-agency commercial - 46 9 - 55 Asset-backed securities - 82 56 - 138 Available-for-sale debt securities total 693 706 69 - 1,468 Equity investments: Fixed income mutual funds: Fixed income mutual funds measured at 1 1,134 Total return bond funds 830 - - - 830 Equity mutual funds 1,073 - - - 1,073 Equity investments total 1,903 - - - 3,037 Investments in marketable securities total 2,596 706 69 - 4,505 Derivative assets: Interest rate swaps - 1,149 - - 1,149 Foreign currency swaps - 89 - - 89 Counterparty netting and collateral - - - ( 1,197 ) ( 1,197 ) Derivative assets total - 1,238 - ( 1,197 ) 41 Assets at fair value 2,596 1,944 69 ( 1,197 ) 4,546 Derivative liabilities: Interest rate swaps - ( 52 ) - - ( 52 ) Foreign currency swaps - ( 918 ) - - ( 918 ) Counterparty netting and collateral - - - 947 947 Liabilities at fair value - ( 970 ) - 947 ( 23 ) Net assets at fair value $ 2,596 $ 974 $ 69 $ ( 250 ) $ 4,523 1 Measured at net asset value and therefore excluded from leveling.
Financial Assets and Liabilities Not Carried at Fair Value on Recurring Basis on Consolidated Balance Sheets	The following tables provide information about assets and liabilities not carried at fair value on a recurring basis on our Consolidated Balance Sheets: September 30, 2024 Carrying Total Fair value Level 1 Level 2 Level 3 value Financial assets Finance receivables Retail loan $ 87,262 $ - $ - $ 89,656 $ 89,656 Wholesale 6,369 - - 6,409 6,409 Real estate 5,192 - - 5,246 5,246 Working capital 4,707 - - 4,677 4,677 Financial liabilities Unsecured notes and loans payable $ 91,497 $ - $ 90,844 $ - $ 90,844 Secured notes and loans payable 34,459 - - 34,527 34,527 March 31, 2024 Carrying Total Fair value Level 1 Level 2 Level 3 value Financial assets Finance receivables Retail loan $ 85,886 $ - $ - $ 86,575 $ 86,575 Wholesale 6,690 - - 6,710 6,710 Real estate 4,900 - - 4,890 4,890 Working capital 4,531 - - 4,494 4,494 Financial liabilities Unsecured notes and loans payable $ 88,083 $ - $ 86,133 $ - $ 86,133 Secured notes and loans payable 34,337 - - 34,003 34,003

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Financial information for our reportable operating segments, which includes allocated corporate expenses, is summarized as follows: Three months ended September 30, 2024 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 3,297 $ - $ - $ 3,297 Depreciation on operating leases 1,015 - - 1,015 Interest expense 1,584 - - 1,584 Net financing revenues 698 - - 698 Voluntary protection contract revenues - 300 - 300 Investment and other income, net 136 252 - 388 Net financing and other revenues 834 552 - 1,386 Expenses: Provision for credit losses 206 - - 206 Operating and administrative 332 121 - 453 Voluntary protection contract expenses and insurance losses - 161 - 161 Total expenses 538 282 - 820 Income before income taxes 296 270 - 566 Provision for income taxes 74 63 - 137 Net income $ 222 $ 207 $ - $ 429 Six months ended September 30, 2024 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 6,506 $ - $ - $ 6,506 Depreciation on operating leases 2,049 - - 2,049 Interest expense 3,027 - - 3,027 Net financing revenues 1,430 - - 1,430 Voluntary protection contract revenues - 595 - 595 Investment and other income, net 302 309 - 611 Net financing and other revenues 1,732 904 - 2,636 Expenses: Provision for credit losses 395 - - 395 Operating and administrative 659 234 - 893 Voluntary protection contract expenses and insurance losses - 320 - 320 Total expenses 1,054 554 - 1,608 Income before income taxes 678 350 - 1,028 Provision for income taxes 161 81 - 242 Net income $ 517 $ 269 $ - $ 786 Total assets at September 30, 2024 $ 145,636 $ 8,008 $ ( 93 ) $ 153,551 Note 13 – Segment Information (Continued) Three months ended September 30, 2023 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 2,986 $ - $ - $ 2,986 Depreciation on operating leases 918 - - 918 Interest expense 1,272 - - 1,272 Net financing revenues 796 - - 796 Voluntary protection contract revenues - 278 - 278 Investment and other income (loss), net 119 ( 137 ) - ( 18 ) Net financing and other revenues 915 141 - 1,056 Expenses: Provision for credit losses 221 - - 221 Operating and administrative 332 117 - 449 Voluntary protection contract expenses and insurance losses - 145 - 145 Total expenses 553 262 - 815 Income (loss) before income taxes 362 ( 121 ) - 241 Provision (benefit) for income taxes 83 ( 20 ) - 63 Net income (loss) $ 279 $ ( 101 ) $ - $ 178 Six months ended September 30, 2023 Finance Voluntary protection Intercompany operations operations eliminations Total Total financing revenues $ 5,890 $ - $ - $ 5,890 Depreciation on operating leases 2,073 - - 2,073 Interest expense 2,171 - - 2,171 Net financing revenues 1,646 - - 1,646 Voluntary protection contract revenues - 549 - 549 Investment and other income (loss), net 233 ( 89 ) - 144 Net financing and other revenues 1,879 460 - 2,339 Expenses: Provision for credit losses 386 - - 386 Operating and administrative 666 231 - 897 Voluntary protection contract expenses and insurance losses - 291 - 291 Total expenses 1,052 522 - 1,574 Income (loss) before income taxes 827 ( 62 ) - 765 Provision (benefit) for income taxes 202 ( 7 ) - 195 Net income (loss) $ 625 $ ( 55 ) $ - $ 570 Total assets at September 30, 2023 $ 133,013 $ 6,780 $ ( 78 ) $ 139,715

Investments in Marketable Sec_3

Investments in Marketable Securities - Additional Information (Details) - USD ($)	6 Months Ended	12 Months Ended
	Sep. 30, 2024	Mar. 31, 2024
Marketable Securities [Abstract]
Fair value option elected	$ 785,000,000	$ 778,000,000
Available-for-sale debt securities unrealized loss	$ 43,000,000	$ 70,000,000
Private placement share redemption percentage	1%
Private placement share redemption amount	$ 250,000
Share redemption period	90 days

Investments in Marketable Sec_4

Investments in Marketable Securities - Summary of Investments in Marketable Securities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	$ 1,612	$ 1,622
Available-for-sale debt securities, Unrealized gains	13	4
Available-for-sale debt securities, Unrealized losses	(114)	(158)
Available-for-sale debt securities, Fair value	1,511	1,468
Equity investments, Fair value	3,270	3,037
Investments in marketable securities total	4,781	4,505
U.S. government and agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	805	783
Available-for-sale debt securities, Unrealized gains	4	1
Available-for-sale debt securities, Unrealized losses	(65)	(87)
Available-for-sale debt securities, Fair value	744	697
Foreign government and agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	14	13
Available-for-sale debt securities, Unrealized gains	1	0
Available-for-sale debt securities, Unrealized losses	(1)	(1)
Available-for-sale debt securities, Fair value	14	12
Municipal debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	8	8
Available-for-sale debt securities, Unrealized gains	1	0
Available-for-sale debt securities, Unrealized losses	(1)	(1)
Available-for-sale debt securities, Fair value	8	7
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	469	477
Available-for-sale debt securities, Unrealized gains	5	2
Available-for-sale debt securities, Unrealized losses	(35)	(49)
Available-for-sale debt securities, Fair value	439	430
U.S. government agency mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	121	123
Available-for-sale debt securities, Unrealized gains	1	0
Available-for-sale debt securities, Unrealized losses	(2)	(5)
Available-for-sale debt securities, Fair value	120	118
Non-agency residential mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	12	12
Available-for-sale debt securities, Unrealized gains	0	0
Available-for-sale debt securities, Unrealized losses	(1)	(1)
Available-for-sale debt securities, Fair value	11	11
Non-agency commercial mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	55	64
Available-for-sale debt securities, Unrealized gains	0	0
Available-for-sale debt securities, Unrealized losses	(6)	(9)
Available-for-sale debt securities, Fair value	49	55
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, Amortized cost	128	142
Available-for-sale debt securities, Unrealized gains	1	1
Available-for-sale debt securities, Unrealized losses	(3)	(5)
Available-for-sale debt securities, Fair value	$ 126	$ 138

Investments in Marketable Sec_5

Investments in Marketable Securities - Schedule of Continuous Unrealized Losses on Available-For-Sale Debt Securities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	$ 51	$ 419
Available-for-sale debt securities, 12 months or longer, Fair value	1,044	852
Available-for-sale debt securities, Total, Fair value	1,095	1,271
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	(17)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(114)	(141)
Available-for-sale debt securities, Total, Unrealized losses	(114)	(158)
U.S. government and agency obligations [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	44	317
Available-for-sale debt securities, 12 months or longer, Fair value	572	336
Available-for-sale debt securities, Total, Fair value	616	653
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	(13)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(65)	(74)
Available-for-sale debt securities, Total, Unrealized losses	(65)	(87)
Foreign government and agency obligations [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0	1
Available-for-sale debt securities, 12 months or longer, Fair value	5	8
Available-for-sale debt securities, Total, Fair value	5	9
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(1)	(1)
Available-for-sale debt securities, Total, Unrealized losses	(1)	(1)
Municipal debt securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0	0
Available-for-sale debt securities, 12 months or longer, Fair value	2	2
Available-for-sale debt securities, Total, Fair value	2	2
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(1)	(1)
Available-for-sale debt securities, Total, Unrealized losses	(1)	(1)
Corporate debt securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	4	31
Available-for-sale debt securities, 12 months or longer, Fair value	319	339
Available-for-sale debt securities, Total, Fair value	323	370
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	(3)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(35)	(46)
Available-for-sale debt securities, Total, Unrealized losses	(35)	(49)
U.S. government agency mortgage-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0	51
Available-for-sale debt securities, 12 months or longer, Fair value	40	49
Available-for-sale debt securities, Total, Fair value	40	100
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	(1)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(2)	(4)
Available-for-sale debt securities, Total, Unrealized losses	(2)	(5)
Non-agency residential mortgage-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0	1
Available-for-sale debt securities, 12 months or longer, Fair value	7	7
Available-for-sale debt securities, Total, Fair value	7	8
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(1)	(1)
Available-for-sale debt securities, Total, Unrealized losses	(1)	(1)
Non-agency commercial mortgage-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0	1
Available-for-sale debt securities, 12 months or longer, Fair value	48	53
Available-for-sale debt securities, Total, Fair value	48	54
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(6)	(9)
Available-for-sale debt securities, Total, Unrealized losses	(6)	(9)
Asset-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	3	17
Available-for-sale debt securities, 12 months or longer, Fair value	51	58
Available-for-sale debt securities, Total, Fair value	54	75
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(3)	(5)
Available-for-sale debt securities, Total, Unrealized losses	$ (3)	$ (5)

Investments in Marketable Sec_6

Investments in Marketable Securities - Schedule of Gains and Losses on Investments in Marketable Securities Presented in Our Consolidated Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Available-for-sale debt securities:
Unrealized gains (losses) on securities for which the fair value option was elected	$ 32	$ (38)	$ 27	$ (50)
Realized gains (losses) on sales, net	0	(2)	(4)	(2)
Equity investments:
Unrealized gains (losses)	170	(146)	184	(134)
Realized losses on sales, net	$ (10)	$ 0	$ (16)	$ 0

Investments in Marketable Sec_7

Investments in Marketable Securities - Summary of Contractual Maturities of Available-for-Sale Debt Securities (Details) - USD ($) $ in Millions		Sep. 30, 2024	Mar. 31, 2024
Available-for-sale debt securities, Amortized cost
Due within 1 Year, Amortized cost		$ 60
Due after 1 Year through 5 Years, Amortized cost		342
Due after 5 Years through 10 Years, Amortized cost		443
Due after 10 Years, Amortized cost		451
Mortgage-backed and asset-backed securities, Amortized cost	[1]	316
Available-for-sale debt securities, Amortized cost		$ 1,612	$ 1,622
Debt Securities, Available-for-sale, Maturity Allocation [Extensible List]		us-gaap:DebtSecuritiesMaturityAllocationContractualMaturityMember
Available-for-sale debt securities, Fair value
Due within 1 Year, Fair value		$ 59
Due after 1 Year through 5 Years, Fair value		336
Due after 5 Years through 10 Years, Fair value		433
Due after 10 Years, Fair value		377
Mortgage-backed and asset-backed securities, Fair value	[1]	306
Total, Fair value		$ 1,511	$ 1,468
Debt Securities, Available-for-sale, Maturity Allocation [Extensible List]		us-gaap:DebtSecuritiesMaturityAllocationContractualMaturityMember
[1] Mortgage-backed and asset-backed securities are shown separately from other maturity groupings as these securities have multiple maturity dates.

Finance Receivables, Net - Net

Finance Receivables, Net - Net Financing Receivables (Details) - USD ($) $ in Millions		Sep. 30, 2024	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables		$ 104,893	$ 103,306
Allowance for credit losses		(1,656)	(1,637)
Finance receivables, net		103,237	101,669
Finance Receivables, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables		105,240	103,331
Deferred origination costs		1,339	1,399
Deferred income		(1,686)	(1,424)
Allowance for credit losses		(1,656)	(1,637)
Finance receivables, net		103,237	101,669
Finance Receivables, Net [Member] | Retail receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	[1]	88,860	87,150
Allowance for credit losses		(1,563)	(1,549)
Finance Receivables, Net [Member] | Dealer financing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables		16,380	16,181
Allowance for credit losses		$ (93)	$ (88)
[1] Includes gross securitized retail receivables of $ 32.5 billion and $ 31.5 billion as of September 30, 2024 and March 31, 2024 , respectively.

Finance Receivables, Net - Ne_2

Finance Receivables, Net - Net Financing Receivables (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	$ 104,893	$ 103,306
Finance Receivables, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	105,240	103,331
Finance Receivables, Net [Member] | Securitized retail receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	$ 32,500	$ 31,500

Finance Receivables, Net - Addi

Finance Receivables, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest before allowance for credit loss	$ 394	$ 394	$ 396
Gross Charges Off	0	0	0
Retail Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest before allowance for credit loss	321	321	318
Gross Charges Off		435	776
Dealer Products [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest before allowance for credit loss	$ 73	$ 73	$ 78

Finance Receivables, Net - Sche

Finance Receivables, Net - Schedule of Amortized Cost Basis of Retail Loan Portfolio and Dealer Products Portfolio by Credit Quality Indicator (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Mar. 31, 2024
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	$ 1,190	$ 1,190	$ 2,083
Year two, originated, fiscal year before current fiscal year	1,788	1,788	1,381
Year three, originated, two years before current fiscal year	1,086	1,086	1,117
Year four, originated, three years before current fiscal year	911	911	1,026
Year five, originated, four years before current fiscal year	927	927	235
Originated, more than five years before current fiscal year	968	968	945
Revolving loans	9,510	9,510	9,394
Total	16,380	16,380	16,181
Gross Charge-Offs, Total	0	0	0
Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	18,331	18,331	35,823
Year two, originated, fiscal year before current fiscal year	30,368	30,368	23,173
Year three, originated, two years before current fiscal year	18,897	18,897	15,639
Year four, originated, three years before current fiscal year	12,417	12,417	8,878
Year five, originated, four years before current fiscal year	6,462	6,462	2,783
Originated, more than five years before current fiscal year	2,038	2,038	829
Total	88,513	88,513	87,125
Gross Charge-Offs, year one, originated, current fiscal year		1	38
Gross Charge-Offs, Year two, originated, fiscal year before current fiscal year		105	297
Gross Charge-Offs, Year three, originated, two years before current fiscal year		161	258
Gross Charge-Offs, Year four, originated, three years before current fiscal year		104	111
Gross Charge-Offs, Year five, originated, four years before current fiscal year		41	38
Gross Charge-Offs, Originated, more than five years before current fiscal year		23	34
Gross Charge-Offs, Total		435	776
Current [Member] | Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	18,204	18,204	35,407
Year two, originated, fiscal year before current fiscal year	29,732	29,732	22,473
Year three, originated, two years before current fiscal year	18,148	18,148	15,041
Year four, originated, three years before current fiscal year	11,827	11,827	8,539
Year five, originated, four years before current fiscal year	6,140	6,140	2,654
Originated, more than five years before current fiscal year	1,881	1,881	748
Total	85,932	85,932	84,862
30-59 Days Past Due [Member] | Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	92	92	301
Year two, originated, fiscal year before current fiscal year	428	428	488
Year three, originated, two years before current fiscal year	506	506	426
Year four, originated, three years before current fiscal year	409	409	242
Year five, originated, four years before current fiscal year	225	225	92
Originated, more than five years before current fiscal year	102	102	53
Total	1,762	1,762	1,602
60-89 Days Past Due [Member] | Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	26	26	77
Year two, originated, fiscal year before current fiscal year	138	138	143
Year three, originated, two years before current fiscal year	162	162	119
Year four, originated, three years before current fiscal year	125	125	68
Year five, originated, four years before current fiscal year	68	68	27
Originated, more than five years before current fiscal year	35	35	17
Total	554	554	451
90 Days or Greater Past Due [Member] | Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	9	9	38
Year two, originated, fiscal year before current fiscal year	70	70	69
Year three, originated, two years before current fiscal year	81	81	53
Year four, originated, three years before current fiscal year	56	56	29
Year five, originated, four years before current fiscal year	29	29	10
Originated, more than five years before current fiscal year	20	20	11
Total	265	265	210
Wholesale [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	0
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	6,360	6,360	6,673
Total	6,360	6,360	6,673
Wholesale [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	0
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	5,952	5,952	6,287
Total	5,952	5,952	6,287
Wholesale [Member] | Credit Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	0
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	379	379	238
Total	379	379	238
Wholesale [Member] | At Risk [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	0
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	21	21	112
Total	21	21	112
Wholesale [Member] | Default [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	0
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	8	8	36
Total	8	8	36
Real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	788	788	1,294
Year two, originated, fiscal year before current fiscal year	1,149	1,149	923
Year three, originated, two years before current fiscal year	783	783	869
Year four, originated, three years before current fiscal year	729	729	891
Year five, originated, four years before current fiscal year	815	815	128
Originated, more than five years before current fiscal year	737	737	786
Revolving loans	208	208	3
Total	5,209	5,209	4,894
Real estate [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	713	713	1,224
Year two, originated, fiscal year before current fiscal year	1,094	1,094	883
Year three, originated, two years before current fiscal year	783	783	815
Year four, originated, three years before current fiscal year	701	701	860
Year five, originated, four years before current fiscal year	800	800	128
Originated, more than five years before current fiscal year	735	735	784
Revolving loans	208	208	3
Total	5,034	5,034	4,697
Real estate [Member] | Credit Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	70	70	58
Year two, originated, fiscal year before current fiscal year	46	46	37
Year three, originated, two years before current fiscal year	0	0	44
Year four, originated, three years before current fiscal year	28	28	6
Year five, originated, four years before current fiscal year	15	15	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	0	0	0
Total	159	159	145
Real estate [Member] | At Risk [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	8
Year two, originated, fiscal year before current fiscal year	9	9	1
Year three, originated, two years before current fiscal year	0	0	10
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	2	2	2
Revolving loans	0	0	0
Total	11	11	21
Real estate [Member] | Default [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	5	5	4
Year two, originated, fiscal year before current fiscal year	0	0	2
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	25
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	0	0	0
Total	5	5	31
Working capital [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	402	402	789
Year two, originated, fiscal year before current fiscal year	639	639	458
Year three, originated, two years before current fiscal year	303	303	248
Year four, originated, three years before current fiscal year	182	182	135
Year five, originated, four years before current fiscal year	112	112	107
Originated, more than five years before current fiscal year	231	231	159
Revolving loans	2,942	2,942	2,718
Total	4,811	4,811	4,614
Working capital [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	391	391	769
Year two, originated, fiscal year before current fiscal year	627	627	414
Year three, originated, two years before current fiscal year	286	286	235
Year four, originated, three years before current fiscal year	178	178	122
Year five, originated, four years before current fiscal year	112	112	105
Originated, more than five years before current fiscal year	231	231	159
Revolving loans	2,939	2,939	2,715
Total	4,764	4,764	4,519
Working capital [Member] | Credit Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	11	11	20
Year two, originated, fiscal year before current fiscal year	12	12	41
Year three, originated, two years before current fiscal year	14	14	13
Year four, originated, three years before current fiscal year	4	4	0
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	2	2	2
Total	43	43	76
Working capital [Member] | At Risk [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	3
Year three, originated, two years before current fiscal year	3	3	0
Year four, originated, three years before current fiscal year	0	0	0
Year five, originated, four years before current fiscal year	0	0	2
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	1	1	1
Total	4	4	6
Working capital [Member] | Default [Member]
Financing Receivable, Recorded Investment [Line Items]
Year one, originated, current fiscal year	0	0	0
Year two, originated, fiscal year before current fiscal year	0	0	0
Year three, originated, two years before current fiscal year	0	0	0
Year four, originated, three years before current fiscal year	0	0	13
Year five, originated, four years before current fiscal year	0	0	0
Originated, more than five years before current fiscal year	0	0	0
Revolving loans	0	0	0
Total	$ 0	$ 0	$ 13

Finance Receivables, Net - Agin

Finance Receivables, Net - Aging of Amortized Cost Basis of Finance Receivables by Class (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	$ 104,893	$ 103,306
90 Days or greater past due and accruing	173	142
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	1,788	1,602
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	554	451
90 Days or Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	265	210
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	2,607	2,263
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	102,286	101,043
Retail Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	88,513	87,125
90 Days or greater past due and accruing	173	142
Retail Loan [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	1,762	1,602
Retail Loan [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	554	451
Retail Loan [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	265	210
Retail Loan [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	2,581	2,263
Retail Loan [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	85,932	84,862
Wholesale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	6,360	6,673
90 Days or greater past due and accruing	0	0
Wholesale [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	1	0
Wholesale [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Wholesale [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Wholesale [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	1	0
Wholesale [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	6,359	6,673
Real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	5,209	4,894
90 Days or greater past due and accruing	0	0
Real estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Real estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Real estate [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Real estate [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Real estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	5,209	4,894
Working capital [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	4,811	4,614
90 Days or greater past due and accruing	0	0
Working capital [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	25	0
Working capital [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Working capital [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	0	0
Working capital [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	25	0
Working capital [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Finance receivables	$ 4,786	$ 4,614

Allowance for Credit Losses - A

Allowance for Credit Losses - Allowance for Credit Losses and Finance Receivables by Portfolio Segment (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended				12 Months Ended
	Sep. 30, 2024		Sep. 30, 2023		Sep. 30, 2024		Sep. 30, 2023		Mar. 31, 2024
Financing Receivable Allowance For Credit Losses [Abstract]
Charge-offs	$ 0				$ 0				$ 0
Provision for credit losses	206		$ 221		395		$ 386
Retail loan [Member]
Financing Receivable Allowance For Credit Losses [Abstract]
Charge-offs					(435)				(776)
Finance Receivables, Net [Member]
Financing Receivable Allowance For Credit Losses [Abstract]
Allowance for credit losses at beginning of period	1,705		1,573		1,684		1,513		1,513
Charge-offs	(237)		(191)		(435)		(325)
Recoveries	35		25		65		54
Provision for credit losses	206		221		395		386
Allowance for credit losses at end of period	1,709	[1]	1,628	[2]	1,709	[1]	1,628	[2]	1,684
Finance Receivables, Net [Member] | Retail loan [Member]
Financing Receivable Allowance For Credit Losses [Abstract]
Allowance for credit losses at beginning of period	1,559		1,483		1,549		1,430		1,430
Charge-offs	(237)		(191)		(435)		(325)
Recoveries	35		25		65		54
Provision for credit losses	206		212		384		370
Allowance for credit losses at end of period	1,563	[1]	1,529	[2]	1,563	[1]	1,529	[2]	1,549
Finance Receivables, Net [Member] | Dealer products [Member]
Financing Receivable Allowance For Credit Losses [Abstract]
Allowance for credit losses at beginning of period	146		90		135		83		83
Charge-offs	0		0		0		0
Recoveries	0		0		0		0
Provision for credit losses	0		9		11		16
Allowance for credit losses at end of period	$ 146	[1]	$ 99	[2]	$ 146	[1]	$ 99	[2]	$ 135
[1] Ending balance includes $ 53 million of allowance for credit losses recorded in Other liabilities on the Consolidated Balance Sheet which is related to off-balance sheet lending commitments in the dealer products portfolio. Ending balance includes $ 33 million of allowance for credit losses recorded in Other liabilities on the Consolidated Balance Sheet which is related to off-balance sheet lending commitments in the dealer products portfolio.

Allowance for Credit Losses -_2

Allowance for Credit Losses - Allowance for Credit Losses and Finance Receivables by Portfolio Segment (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023
Finance Receivables, Net [Member] | Dealer Products [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for credit losses related to off-balance sheet commitments	$ 53	$ 33

Allowance for Credit Losses -_3

Allowance for Credit Losses - Additional Information (Details) - Finance Receivables, Net [Member] - Financial Guarantee [Member] - Dealer Products [Member] - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023
TMNA [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending Balance: collectively evaluated for impairment	$ 1.3	$ 1,200
Private Toyota Distributors [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending Balance: collectively evaluated for impairment	$ 273	$ 219

Investments in Operating Leas_3

Investments in Operating Leases, Net - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Investments in operating leases [Member]
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Investment tax credits	$ 281	$ 84

Investments in Operating Leas_4

Investments in Operating Leases, Net - Investments in Operating Leases, Net (Details) - USD ($) $ in Millions		Sep. 30, 2024	Mar. 31, 2024
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases, net		$ 28,710	$ 28,013
Investments in operating leases [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases	[1]	35,290	35,383
Investments In Operating Leases, Net [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Deferred income		(867)	(609)
Accumulated depreciation		$ (5,713)	$ (6,761)
[1] Includes gross securitized investments in operating leases of $ 11.9 billion and $ 13.8 billion as of September 30, 2024 and March 31, 2024 , respectively.

Investments in Operating Leas_5

Investments in Operating Leases, Net - Investments in Operating Leases, Net (Parenthetical) (Details) - USD ($) $ in Billions	Sep. 30, 2024	Mar. 31, 2024
Securitized investments in operating leases [Member]
Property Subject To Or Available For Operating Lease [Line Items]
Investments in operating leases	$ 11.9	$ 13.8

Derivatives, Hedging Activiti_3

Derivatives, Hedging Activities and Interest Expense - Derivative Activity Impact on Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Derivatives Fair Value [Line Items]
Derivative Asset Statement Of Financial Position	Other assets	Other assets
Derivative liability Statement Of Financial Position	Other liabilities	Other liabilities
Other assets [Member]
Derivatives Fair Value [Line Items]
Notional	$ 55,737	$ 73,589
Fair value	820	1,238
Counterparty netting	(309)	(346)
Collateral held	(457)	(851)
Other assets [Member] | Interest rate swaps [Member]
Derivatives Fair Value [Line Items]
Notional	50,878	71,830
Fair value	567	1,149
Other assets [Member] | Foreign currency swaps [Member]
Derivatives Fair Value [Line Items]
Notional	4,859	1,759
Fair value	253	89
Other liabilities [Member]
Derivatives Fair Value [Line Items]
Notional	66,608	46,353
Fair value	539	970
Counterparty netting	(309)	(346)
Collateral posted	(221)	(601)
Other liabilities [Member] | Interest rate swaps [Member]
Derivatives Fair Value [Line Items]
Notional	61,271	38,920
Fair value	24	52
Other liabilities [Member] | Foreign currency swaps [Member]
Derivatives Fair Value [Line Items]
Notional	5,337	7,433
Fair value	515	918
Carrying value [Member]
Derivatives Fair Value [Line Items]
Carrying value of derivative contracts – Other assets	54	41
Carrying value of derivative contracts – Other liabilities	$ 9	$ 23

Derivatives, Hedging Activiti_4

Derivatives, Hedging Activities and Interest Expense - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Collateral and variation margin held in excess of the fair value of derivative assets	$ 5	$ 5
Initial margin, collateral and variation margin posted in excess of the fair value of derivative liabilities	$ 420	$ 311

Derivatives, Hedging Activiti_5

Derivatives, Hedging Activities and Interest Expense - Components of Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments Gain Loss [Line Items]
Interest expense on debt	$ 1,424	$ 1,189	$ 2,829	$ 2,275
Interest income on derivatives	(39)	(205)	(97)	(414)
Interest expense on debt and derivatives	1,385	984	2,732	1,861
Losses (gains) on debt denominated in foreign currencies	374	(280)	394	(243)
(Gains) losses on foreign currency swaps	(606)	253	(599)	297
Losses on U.S. dollar interest rate swaps	431	315	500	256
Total interest expense	$ 1,584	$ 1,272	$ 3,027	$ 2,171

Debt and Credit Facilities - De

Debt and Credit Facilities - Debt and Related Weighted Average Contractual Interest Rates (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Debt Instrument [Line Items]
Debt, Face value	$ 126,504	$ 122,963
Debt, Carrying value	$ 125,956	$ 122,420
Weighted average contractual interest rates	4.36%	4.32%
Unsecured notes and loans payable [Member]
Debt Instrument [Line Items]
Debt, Face value	$ 91,991	$ 88,576
Debt, Carrying value	$ 91,497	$ 88,083
Weighted average contractual interest rates	4.17%	4.19%
Secured notes and loans payable [Member]
Debt Instrument [Line Items]
Debt, Face value	$ 34,513	$ 34,387
Debt, Carrying value	$ 34,459	$ 34,337
Weighted average contractual interest rates	4.85%	4.64%

Debt and Credit Facilities - Ad

Debt and Credit Facilities - Additional Information (Details 1) - USD ($) $ in Billions	Sep. 30, 2024	Mar. 31, 2024
Debt Disclosure [Abstract]
Commercial paper outstanding	$ 17.1	$ 17.2

Debt and Credit Facilities - _2

Debt and Credit Facilities - Additional Information (Details) - USD ($)	Sep. 30, 2024	Mar. 31, 2024
364 Day Credit Agreement Expiring 2025 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	$ 5,000,000,000
Credit facilities amount outstanding	0	$ 0
Three Year Agreement Expiring 2027 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000
Credit facilities amount outstanding	0	0
Five Year Syndicated Bank Credit Facility Expiring 2029 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000
Credit facilities amount outstanding	0	0
Revolving Securitization Facility [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	8,500,000,000
Credit facilities amount outstanding	4,500,000,000	3,400,000,000
Total Committed Bank Credit Facilities [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	4,600,000,000
Credit facilities amount outstanding	0	0
Committed Bank Credit Facility Expiring March 31, 2025 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	2,200,000,000
Committed Bank Credit Facility Expiring March 31, 2026 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	400,000,000
Committed Bank Credit Facility Expiring March 31, 2027 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	1,700,000,000
Committed Bank Credit Facility Expiring March 31, 2028 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	325,000,000
Three Year Revolving Credit Facility Expiring March 31, 2027 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000
Credit facilities amount outstanding	$ 0	$ 0

Variable Interest Entities - Sc

Variable Interest Entities - Schedule of Assets and Liabilities related to Variable Interest Entities Securitization Transactions (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	$ 2,183	$ 2,251
Net securitized assets	103,237	101,669
Other assets	4,431	4,373
Debt	125,956	122,420
Other liabilities	7,138	6,707
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net securitized assets	32,137	31,130
Other assets	160	142
Debt	34,459	34,337
Other liabilities	58	66
Other assets [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net securitized assets	41,164	41,404
Other assets	160	142
Other liabilities [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Debt	34,459	34,337
Other liabilities	58	66
Retail Finance Receivables [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	1,551	1,559
Retail Finance Receivables [Member] | Other assets [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net securitized assets	32,137	31,130
Other assets	137	125
Retail Finance Receivables [Member] | Other liabilities [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Debt	28,305	27,351
Other liabilities	49	54
Investments In Operating Leases, Net [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	632	692
Investments In Operating Leases, Net [Member] | Other assets [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net securitized assets	9,027	10,274
Other assets	23	17
Investments In Operating Leases, Net [Member] | Other liabilities [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Debt	6,154	6,986
Other liabilities	$ 9	$ 12

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Details) - USD ($) $ in Billions	Sep. 30, 2024	Mar. 31, 2024
Variable Interest Entities [Abstract]
Securities retained by TMCC	$ 1.6	$ 1.6

Commitments and Contingencies -

Commitments and Contingencies - Commitments and Guarantees (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Commitments:
Credit facilities commitments with dealers	$ 3,130	$ 3,244
Commitments under operating lease agreements	118	106
Total commitments	3,248	3,350
Total commitments and guarantees	3,348	3,450
Performance Guarantee [Member] | Putnam and Gibson Counties [Member]
Commitments:
Guarantees of affiliate pollution control and solid waste disposal bonds	$ 100	$ 100

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) - USD ($)	6 Months Ended
	Sep. 30, 2024	Mar. 31, 2024
Commitments And Contingencies [Line Items]
Lease description	Lease terms may contain renewal and extension options or early termination features. Generally, these options do not impact the lease term because TMCC is not reasonably certain that it will exercise the options. These lease agreements do not impose restrictions on our ability to pay dividends, engage in debt or equity financing transactions or enter into further lease agreements, nor do they have residual value guarantees. We exclude from our Consolidated Balance Sheets leases with a term equal to one year or less and do not separate non-lease components from our real estate leases. Total operating lease expense, including payments to affiliates for the first half and second quarter of fiscal 2025 and fiscal 2024 were not significant.Operating lease liabilities and right-of-use (“ROU”) assets are recognized at the lease commencement date based on the present value of the future minimum lease payments over the lease term. As the interest rate implicit in the lease contract is typically not readily determinable, we utilize our incremental borrowing rate at the lease commencement date for the duration of the lease term. As of September 30, 2024 and March 31, 2024, operating lease liabilities and ROU assets related to our operating lease agreements for which we are the lessee were not significant.
Indemnification provisions	$ 0	$ 0
Putnam and Gibson Counties [Member] | Performance Guarantee [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	$ 100,000,000	100,000,000
TMNA [Member]
Commitments And Contingencies [Line Items]
Lease agreement expiration date	2032-08
TMCC-affiliated companies [Member]
Commitments And Contingencies [Line Items]
Commitments under operating lease agreements	$ 58,000,000	$ 62,000,000
TMCC-affiliated companies [Member] | Putnam and Gibson Counties [Member] | Performance Guarantee [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	100,000,000
TMCC-affiliated companies [Member] | Putnam and Gibson Counties [Member] | Performance Guarantee [Member] | 2028 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	20,000,000
TMCC-affiliated companies [Member] | Putnam and Gibson Counties [Member] | Performance Guarantee [Member] | 2029 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	50,000,000
TMCC-affiliated companies [Member] | Putnam and Gibson Counties [Member] | Performance Guarantee [Member] | 2030 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000
TMCC-affiliated companies [Member] | Putnam and Gibson Counties [Member] | Performance Guarantee [Member] | 2031 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000
TMCC-affiliated companies [Member] | Putnam and Gibson Counties [Member] | Performance Guarantee [Member] | 2032 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	$ 10,000,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 137	$ 63	$ 242	$ 195
Effective tax rate	24%	26%	24%	25%
Net deferred income tax liability	$ 2,700		$ 2,700		$ 3,300

Related Party Transactions - Re

Related Party Transactions - Related Party Transactions Included in Consolidated Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Voluntary protection contract revenues and insurance earned premiums:
Voluntary protection contract revenues and insurance earned premiums	$ 300	$ 278	$ 595	$ 549
Expenses:
Operating and administrative	453	449	893	897
TMCC-affiliated companies [Member]
Net financing revenues:
Manufacturer's subvention and other revenues	239	253	464	523
Depreciation on operating leases	4	(118)	21	(87)
Interest expense:
Credit support fees, interest and other expenses	28	24	57	48
Voluntary protection contract revenues and insurance earned premiums:
Voluntary protection contract revenues and insurance earned premiums	42	39	83	77
Investment and other income, net:
Interest and other income	35	11	48	19
Expenses:
Operating and administrative	$ 26	$ 22	$ 52	$ 46

Related Party Transactions - _2

Related Party Transactions - Related Party Transactions Included in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Cash and cash equivalents
Cash and cash equivalents	$ 10,209	$ 8,570
Other assets
Notes receivable	103,237	101,669
Other liabilities
Other payables, net	7,138	6,707
TMCC-affiliated companies [Member]
Finance receivables, net
Accounts receivable	91	49
Deferred retail subvention income	(1,078)	(953)
Investments in operating leases, net
Investments in operating leases, net	(97)	(80)
Deferred lease subvention income	(451)	(323)
Other assets
Notes receivable	1,494	1,724
Other receivables, net	73	86
Other liabilities
Unearned voluntary protection contract revenues and insurance earned premiums	444	433
Other payables, net	809	771
Notes payable	$ 0	$ 8

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2024	Apr. 30, 2024	Mar. 31, 2024
Related Party Transaction [Line Items]
Subvention support receivable	$ 101		$ 111
TMCC-affiliated companies [Member] | Financing Support to Affiliates [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity		$ 5,000

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	$ 1,511	$ 1,468
Equity investments	3,270	3,037
Investments in marketable securities total	4,781	4,505
U.S. government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	744	697
Foreign government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	14	12
Municipal debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	8	7
Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	439	430
U.S. government agency mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	120	118
Non-agency residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	11	11
Non-agency commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	49	55
Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	126	138
Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	1,511	1,468
Equity investments	3,270	3,037
Investments in marketable securities total	4,781	4,505
Derivative assets	54	41
Counterparty netting and collateral	(766)	(1,197)
Assets at fair value	4,835	4,546
Counterparty netting and collateral	530	947
Liabilities at fair value	(9)	(23)
Net assets at fair value	4,826	4,523
Recurring [Member] | U.S. government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	744	697
Recurring [Member] | Foreign government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	14	12
Recurring [Member] | Municipal debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	8	7
Recurring [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	439	430
Recurring [Member] | U.S. government agency mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	120	118
Recurring [Member] | Non-agency residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	11	11
Recurring [Member] | Non-agency commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	49	55
Recurring [Member] | Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	126	138
Recurring [Member] | Fixed income total return bond funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	877	830
Recurring [Member] | Equity mutual funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	1,173	1,073
Recurring [Member] | Counterparty Netting & Collateral [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Equity investments	0	0
Investments in marketable securities total	0	0
Derivative assets	(766)	(1,197)
Counterparty netting and collateral	(766)	(1,197)
Assets at fair value	(766)	(1,197)
Counterparty netting and collateral	530	947
Liabilities at fair value	530	947
Net assets at fair value	(236)	(250)
Recurring [Member] | Counterparty Netting & Collateral [Member] | U.S. government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Foreign government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Municipal debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | U.S. government agency mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Non-agency residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Non-agency commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Fixed income total return bond funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	0	0
Recurring [Member] | Counterparty Netting & Collateral [Member] | Equity mutual funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	0	0
Recurring [Member] | Foreign currency swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	253	89
Derivative liabilities	(515)	(918)
Recurring [Member] | Foreign currency swaps [Member] | Counterparty Netting & Collateral [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Interest rate swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	567	1,149
Derivative liabilities	(24)	(52)
Recurring [Member] | Interest rate swaps [Member] | Counterparty Netting & Collateral [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	740	693
Equity investments	2,050	1,903
Investments in marketable securities total	2,790	2,596
Derivative assets	0	0
Counterparty netting and collateral	0	0
Assets at fair value	2,790	2,596
Counterparty netting and collateral	0	0
Liabilities at fair value	0	0
Net assets at fair value	2,790	2,596
Recurring [Member] | Level 1 [Member] | U.S. government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	740	693
Recurring [Member] | Level 1 [Member] | Foreign government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | Municipal debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | U.S. government agency mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | Non-agency residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | Non-agency commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 1 [Member] | Fixed income total return bond funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	877	830
Recurring [Member] | Level 1 [Member] | Equity mutual funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	1,173	1,073
Recurring [Member] | Level 1 [Member] | Foreign currency swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 1 [Member] | Interest rate swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	707	706
Equity investments	0	0
Investments in marketable securities total	707	706
Derivative assets	820	1,238
Counterparty netting and collateral	0	0
Assets at fair value	1,527	1,944
Counterparty netting and collateral	0	0
Liabilities at fair value	(539)	(970)
Net assets at fair value	988	974
Recurring [Member] | Level 2 [Member] | U.S. government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	4	4
Recurring [Member] | Level 2 [Member] | Foreign government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	14	12
Recurring [Member] | Level 2 [Member] | Municipal debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	8	7
Recurring [Member] | Level 2 [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	439	430
Recurring [Member] | Level 2 [Member] | U.S. government agency mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	120	118
Recurring [Member] | Level 2 [Member] | Non-agency residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	7	7
Recurring [Member] | Level 2 [Member] | Non-agency commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	45	46
Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	70	82
Recurring [Member] | Level 2 [Member] | Fixed income total return bond funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	0	0
Recurring [Member] | Level 2 [Member] | Equity mutual funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	0	0
Recurring [Member] | Level 2 [Member] | Foreign currency swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	253	89
Derivative liabilities	(515)	(918)
Recurring [Member] | Level 2 [Member] | Interest rate swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	567	1,149
Derivative liabilities	(24)	(52)
Recurring [Member] | Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	64	69
Equity investments	0	0
Investments in marketable securities total	64	69
Derivative assets	0	0
Counterparty netting and collateral	0	0
Assets at fair value	64	69
Counterparty netting and collateral	0	0
Liabilities at fair value	0	0
Net assets at fair value	64	69
Recurring [Member] | Level 3 [Member] | U.S. government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 3 [Member] | Foreign government and agency obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 3 [Member] | Municipal debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 3 [Member] | U.S. government agency mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	0	0
Recurring [Member] | Level 3 [Member] | Non-agency residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	4	4
Recurring [Member] | Level 3 [Member] | Non-agency commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	4	9
Recurring [Member] | Level 3 [Member] | Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, Debt securities	56	56
Recurring [Member] | Level 3 [Member] | Fixed income total return bond funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	0	0
Recurring [Member] | Level 3 [Member] | Equity mutual funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	0	0
Recurring [Member] | Level 3 [Member] | Foreign currency swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 3 [Member] | Interest rate swaps [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Fixed income mutual funds measured at net asset value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investments	$ 1,220	$ 1,134	[1]
[1] Measured at net asset value and therefore excluded from leveling.

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Not Carried at Fair Value on Recurring Basis on Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Carrying value [Member] | Unsecured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	$ 91,497	$ 88,083
Carrying value [Member] | Secured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	34,459	34,337
Fair value [Member] | Unsecured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	90,844	86,133
Fair value [Member] | Secured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	34,527	34,003
Fair value [Member] | Level 1 [Member] | Unsecured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	0	0
Fair value [Member] | Level 1 [Member] | Secured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	0	0
Fair value [Member] | Level 2 [Member] | Unsecured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	90,844	86,133
Fair value [Member] | Level 2 [Member] | Secured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	0	0
Fair value [Member] | Level 3 [Member] | Unsecured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	0	0
Fair value [Member] | Level 3 [Member] | Secured Notes and Loans Payable [Member]
Financial liabilities
Financial liabilities	34,527	34,003
Retail Loan [Member] | Carrying value [Member]
Financial assets
Finance receivables, net	87,262	85,886
Retail Loan [Member] | Fair value [Member]
Financial assets
Finance receivables, net	89,656	86,575
Retail Loan [Member] | Fair value [Member] | Level 1 [Member]
Financial assets
Finance receivables, net	0	0
Retail Loan [Member] | Fair value [Member] | Level 2 [Member]
Financial assets
Finance receivables, net	0	0
Retail Loan [Member] | Fair value [Member] | Level 3 [Member]
Financial assets
Finance receivables, net	89,656	86,575
Wholesale [Member] | Carrying value [Member]
Financial assets
Finance receivables, net	6,369	6,690
Wholesale [Member] | Fair value [Member]
Financial assets
Finance receivables, net	6,409	6,710
Wholesale [Member] | Fair value [Member] | Level 1 [Member]
Financial assets
Finance receivables, net	0	0
Wholesale [Member] | Fair value [Member] | Level 2 [Member]
Financial assets
Finance receivables, net	0	0
Wholesale [Member] | Fair value [Member] | Level 3 [Member]
Financial assets
Finance receivables, net	6,409	6,710
Real estate [Member] | Carrying value [Member]
Financial assets
Finance receivables, net	5,192	4,900
Real estate [Member] | Fair value [Member]
Financial assets
Finance receivables, net	5,246	4,890
Real estate [Member] | Fair value [Member] | Level 1 [Member]
Financial assets
Finance receivables, net	0	0
Real estate [Member] | Fair value [Member] | Level 2 [Member]
Financial assets
Finance receivables, net	0	0
Real estate [Member] | Fair value [Member] | Level 3 [Member]
Financial assets
Finance receivables, net	5,246	4,890
Working capital [Member] | Carrying value [Member]
Financial assets
Finance receivables, net	4,707	4,531
Working capital [Member] | Fair value [Member]
Financial assets
Finance receivables, net	4,677	4,494
Working capital [Member] | Fair value [Member] | Level 1 [Member]
Financial assets
Finance receivables, net	0	0
Working capital [Member] | Fair value [Member] | Level 2 [Member]
Financial assets
Finance receivables, net	0	0
Working capital [Member] | Fair value [Member] | Level 3 [Member]
Financial assets
Finance receivables, net	$ 4,677	$ 4,494

Segment Information - Schedule

Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total financing revenues	$ 3,297	$ 2,986	$ 6,506	$ 5,890
Depreciation on operating leases	1,015	918	2,049	2,073
Interest expense	1,584	1,272	3,027	2,171
Net financing revenues	698	796	1,430	1,646
Voluntary protection contract revenues and insurance earned premiums	300	278	595	549
Investment and other income (loss), net	388	(18)	611	144
Net financing revenues and other revenues	1,386	1,056	2,636	2,339
Expenses:
Provision for credit losses	206	221	395	386
Operating and administrative	453	449	893	897
Voluntary protection contract expenses and insurance losses	161	145	320	291
Total expenses	820	815	1,608	1,574
Income before income taxes	566	241	1,028	765
Provision (benefit) for income taxes	137	63	242	195
Net Income (Loss)	429	178	786	570
Total assets	153,551	139,715	153,551	139,715	$ 149,381
Intercompany Eliminations [Member]
Segment Reporting Information [Line Items]
Total financing revenues	0	0	0	0
Depreciation on operating leases	0	0	0	0
Interest expense	0	0	0	0
Net financing revenues	0	0	0	0
Voluntary protection contract revenues and insurance earned premiums	0	0	0	0
Investment and other income (loss), net	0	0	0	0
Net financing revenues and other revenues	0	0	0	0
Expenses:
Provision for credit losses	0	0	0	0
Operating and administrative	0	0	0	0
Voluntary protection contract expenses and insurance losses	0	0	0	0
Total expenses	0	0	0	0
Income before income taxes	0	0	0	0
Provision (benefit) for income taxes	0	0	0	0
Net Income (Loss)	0	0	0	0
Total assets	(93)	(78)	(93)	(78)
Finance Operations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total financing revenues	3,297	2,986	6,506	5,890
Depreciation on operating leases	1,015	918	2,049	2,073
Interest expense	1,584	1,272	3,027	2,171
Net financing revenues	698	796	1,430	1,646
Voluntary protection contract revenues and insurance earned premiums	0	0	0	0
Investment and other income (loss), net	136	119	302	233
Net financing revenues and other revenues	834	915	1,732	1,879
Expenses:
Provision for credit losses	206	221	395	386
Operating and administrative	332	332	659	666
Voluntary protection contract expenses and insurance losses		0	0	0
Total expenses	538	553	1,054	1,052
Income before income taxes	296	362	678	827
Provision (benefit) for income taxes	74	83	161	202
Net Income (Loss)	222	279	517	625
Total assets	145,636	133,013	145,636	133,013
Voluntary Protection Operations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total financing revenues	0	0	0	0
Depreciation on operating leases	0	0	0	0
Interest expense	0	0	0	0
Net financing revenues	0	0	0	0
Voluntary protection contract revenues and insurance earned premiums	300	278	595	549
Investment and other income (loss), net	252	(137)	309	(89)
Net financing revenues and other revenues	552	141	904	460
Expenses:
Provision for credit losses	0	0	0	0
Operating and administrative	121	117	234	231
Voluntary protection contract expenses and insurance losses	161	145	320	291
Total expenses	282	262	554	522
Income before income taxes	270	(121)	350	(62)
Provision (benefit) for income taxes	63	(20)	81	(7)
Net Income (Loss)	207	(101)	269	(55)
Total assets	$ 8,008	$ 6,780	$ 8,008	$ 6,780

Segment Information - Additiona

Segment Information - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Unearned voluntary protection contract revenues		$ 3,000		$ 3,000
Unearned amounts in voluntary protection contract revenues, recognized	$ 234	$ 212	$ 466	$ 421
Other liabilities [Member]
Segment Reporting Information [Line Items]
Unearned voluntary protection contract revenues	$ 3,300		$ 3,300		$ 3,100	$ 2,900
Accounting Standards Update 2014-09 [Member]
Segment Reporting Information [Line Items]
Percentage of voluntary protection contract revenues	86%	84%	85%	84%

Segment Information - Additio_2

Segment Information - Additional Information (Details1) $ in Millions	Sep. 30, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-10-01
Segment Reporting Information [Line Items]
Revenue, remaining performance obligation, amount	$ 516
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-04-01
Segment Reporting Information [Line Items]
Revenue, remaining performance obligation, amount	$ 2,800
Revenue, remaining performance obligation, expected timing of satisfaction, period