Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 1,197	$ 857		$ 1,331
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,895	4,045		3,604
Recognition of deferred income	(1,539)	(1,278)		(1,191)
Provision for credit losses	308	170		121
Amortization of deferred costs	628	589		541
Foreign currency and other adjustments to the carrying value of debt, net	(2,380)	(205)		(1,103)
Net realized (gains) from sales and other-than-temporary impairment on securities	(70)	0		(21)
Net change in:
Restricted cash	(140)	(153)		191
Derivative assets	(4)	9		12
Other assets (Note 8) and accrued income	(350)	87		37
Deferred income taxes	760	516		792
Derivative liabilities	84	(11)		(50)
Other liabilities	378	248		134
Net cash provided by operating activities	3,767	4,874		4,398
Cash flows from investing activities:
Purchases of investments in marketable securities	(6,164)	(5,114)		(5,279)
Proceeds from sales of investments in marketable securities	991	596		385
Proceeds from maturities of investments in marketable securities	3,529	4,510		4,261
Acquisition of finance receivables	(25,584)	(25,790)		(25,604)
Collection of finance receivables	24,602	23,961		22,941
Net change in wholesale and certain working capital receivables	222	(804)		(1,887)
Acquisition of investments in operating leases	(16,969)	(14,410)		(10,395)
Disposals of investments in operating leases	6,444	6,636		5,603
Net change in financing support provided (to) from affiliates	(12)	(241)	[1]	120	[1]
Cash equivalents un-restricted (restricted) to acquire finance receivables and investment in operating leases	1,077	(1,077)		0
Other, net	(57)	(45)		(31)
Net cash used in investing activities	(11,921)	(11,778)		(9,886)
Cash flows from financing activities:
Proceeds from issuance of debt	25,817	20,226		22,230
Payments on debt	(17,934)	(16,662)		(16,929)
Net change in commercial paper	(704)	3,123		3,349
Net change in financing support provided by affiliates	2	(26)	[1]	(2,012)	[1]
Dividend paid to TFSA	(435)	(665)		(1,487)
Net cash provided by financing activities	6,746	5,996		5,151
Net decrease in cash and cash equivalents	(1,408)	(908)		(337)
Cash and cash equivalents at the beginning of the period	3,815	4,723		5,060
Cash and cash equivalents at the end of the period	2,407	3,815		4,723
Supplemental disclosures:
Interest paid	1,048	1,102		1,258
Income taxes paid (received), net	$ 143	$ (30)		$ 21

[1] Certain prior period amounts have been reclassified to conform to the current period presentation.