Consolidated Balance Sheet (Supplemental) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Mar. 31, 2014
Statement of Financial Position [Abstract]
Variable Interest Entities Assets Liabilities	The following table presents the assets and liabilities of our consolidated variable interest entities (See Note 10).
ASSETS
Finance receivables, net	$ 65,484	$ 65,176
Investments in operating leases, net	28,436	24,769
Other Assets	1,293	1,870
Total assets	106,015	102,740
LIABILITIES
Debt	87,769	85,367
Other liabilities	3,128	2,888
Total liabilities	98,049	95,002
Variable Interest Entity, Primary Beneficiary [Member]
ASSETS
Finance receivables, net	9,018	9,501
Investments in operating leases, net	0	156
Other Assets	4	7
Total assets	9,022	9,664
LIABILITIES
Debt	7,887	8,158
Other liabilities	1	2
Total liabilities	$ 7,888	$ 8,160