Consolidated Statement of Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Financing revenues:
Operating lease	$ 1,191	$ 1,160	$ 3,524	$ 3,542
Retail	514	582	1,571	1,818
Dealer	110	93	328	265
Total financing revenues	1,815	1,835	5,423	5,625
Depreciation on operating leases	901	844	2,636	2,498
Interest expense	284	163	625	769
Net financing revenues	630	828	2,162	2,358
Insurance earned premiums and contract revenues	140	150	435	453
Investment and other income, net	63	62	136	93
Net financing revenues and other revenues	833	1,040	2,733	2,904
Expenses:
Provision for credit losses	88	56	107	(136)
Operating and administrative	229	208	674	617
Insurance losses and loss adjustment expenses	77	78	231	247
Total expenses	394	342	1,012	728
Income before income taxes	439	698	1,721	2,176
Provision for income taxes	156	266	635	828
Net income	$ 283	$ 432	$ 1,086	$ 1,348