Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 1,086	$ 1,348
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,665	2,552
Recognition of deferred income	(886)	(896)
Provision for credit losses	107	(136)
Amortization of deferred costs	404	434
Foreign currency and other adjustments to the carrying value of debt, net	(628)	(1,056)
Net (gain) loss from sale of investments in marketable securities	(7)	27
Net change in:
Restricted cash	100	107
Derivative assets	19	237
Other assets (Note 8) and accrued income	14	87
Deferred income taxes	629	812
Derivative liabilities	(49)	(122)
Other liabilities	190	25
Net cash provided by operating activities	3,644	3,419
Cash flows from investing activities:
Purchase of investments in marketable securities	(3,932)	(6,275)
Proceeds from sales of investments in marketable securities	242	1,475
Proceeds from maturities of investments in marketable securities	3,291	4,396
Acquisition of finance receivables	(19,841)	(16,557)
Collection of finance receivables	17,074	16,665
Net change in wholesale and certain working capital receivables	(1,819)	657
Acquisition of investments in operating leases	(7,386)	(5,572)
Disposals of investments in operating leases	4,066	4,070
Advances to affiliates	(4,035)	(2,386)
Repayments from affiliates	3,407	2,066
Other, net	(14)	(12)
Net cash used in provided by investing activities	(8,947)	(1,473)
Cash flows from financing activities:
Proceeds from issuance of debt	12,723	11,272
Payments on debt	(10,670)	(13,026)
Net change in commercial paper	3,672	1,246
Advances from affiliates	49	6
Repayments to affiliates	(2,059)	(7)
Dividends paid to TFSA	(744)	(741)
Net cash provided by (used in) financing activities	2,971	(1,250)
Net (decrease) increase in cash and cash equivalents	(2,332)	696
Cash and cash equivalents at the beginning of the period	5,060	6,830
Cash and cash equivalents at the end of the period	2,728	7,526
Supplemental disclosures:
Interest paid	985	1,219
Income taxes received, net	(3)	(114)
Non-cash financing:
Capital contribution for stock-based compensation	$ 0	$ 1