Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 335	$ 803
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,933	1,760
Recognition of deferred income	(621)	(587)
Provision for credit losses	39	19
Amortization of deferred costs	280	272
Foreign currency and other adjustments to the carrying value of debt, net	(122)	(366)
Net realized loss (gain) from sales and other-than-temporary impairment on securities	40	(7)
Net change in:
Restricted cash	(10)	66
Derivative assets	(4)	21
Other assets (Note 8) and accrued income	12	39
Deferred income taxes	231	482
Derivative liabilities	(7)	(25)
Other liabilities	203	188
Net cash provided by operating activities	2,309	2,665
Cash flows from investing activities:
Purchases of investments in marketable securities	(1,539)	(3,021)
Proceeds from sales of investments in marketable securities	286	227
Proceeds from maturities of investments in marketable securities	2,227	2,379
Acquisitions of finance receivables	(13,847)	(13,418)
Collection of finance receivables	12,019	11,402
Net change in wholesale and certain working capital receivables	179	(1,042)
Acquisitions of investments in operating leases	(7,297)	(4,874)
Disposals of investments in operating leases	3,617	2,588
Advances to affiliates	(2,111)	(2,635)
Repayments from affiliates	1,755	2,801
Other, net	(15)	(9)
Net cash used in investing activities	(4,726)	(5,602)
Cash flows from financing activities:
Proceeds from issuance of debt	9,644	9,636
Payments on debt	(9,772)	(6,772)
Net change in commercial paper	2,930	2,923
Advances from affiliates	37	48
Repayments to affiliates	(32)	(2,048)
Dividend paid to TFSA	(665)	(744)
Net cash provided by financing activities	2,142	3,043
Net (decrease) increase in cash and cash equivalents	(275)	106
Cash and cash equivalents at the beginning of the period	4,723	5,060
Cash and cash equivalents at the end of the period	4,448	5,166
Supplemental disclosures:
Interest paid	572	639
Income taxes received, net	(35)	(2)
Non-cash financing:
Capital contribution for stock-based compensation		$ 0