Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 1,460	$ 979	$ 2,535
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,301	5,205	5,963
Recognition of deferred income and fees	(1,507)	(1,797)	(2,396)
Provision for credit losses	839	713	236
Amortization of deferred costs	1,030	1,029	1,019
Foreign currency and other adjustments to the carrying value of financial instruments, net	180	206	(230)
Net (gains) losses from investments in marketable securities	(145)	375	181
Net change in:
Derivative assets	10	10	(7)
Other assets and accrued interest	91	(1,040)	(465)
Deferred income taxes	(453)	2,173	(1,288)
Derivative liabilities	6	(8)	24
Other liabilities	1,003	(505)	652
Net cash provided by operating activities	6,815	7,340	6,224
Cash flows from investing activities:
Purchase of investments in marketable securities	(727)	(2,467)	(2,468)
Proceeds from sales of investments in marketable securities	1,282	1,902	1,769
Proceeds from maturities of investments in marketable securities	113	59	338
Acquisition of finance receivables	(54,549)	(49,105)	(47,923)
Collection of finance receivables	44,692	41,309	41,372
Net change in certain wholesale receivables	(2,442)	(930)	3,168
Acquisition of investments in operating leases	(13,755)	(9,617)	(15,064)
Proceeds from disposals of investments in operating leases	11,888	11,001	12,510
Long term loans to affiliates	(1,145)	(760)	(200)
Payments on long term loans from affiliates	669	340	300
Net change in financing support provided to affiliates	(5)	(36)	(26)
Other, net	(74)	(83)	(71)
Net cash used in investing activities	(14,053)	(8,387)	(6,295)
Cash flows from financing activities:
Proceeds from issuance of debt	43,413	38,797	37,266
Payments on debt	(33,498)	(35,374)	(38,156)
Net change in commercial paper and other short-term financing	635	(1,088)	555
Net change in financing support provided by affiliates	0	0	(11)
Dividend paid	(979)	(2,535)	0
Net cash provided (used in) by financing activities	9,571	(200)	(346)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	2,333	(1,247)	(417)
Cash and cash equivalents and restricted cash and cash equivalents at the beginning of the period	8,488	9,735	10,152
Cash and cash equivalents and restricted cash and cash equivalents at the end of the period	10,821	8,488	9,735
Supplemental disclosures:
Interest paid, net	4,010	2,375	1,649
Income taxes paid (received), net	$ 57	$ (462)	$ 1,797