Variable Interest Entities Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Variable Interest Entity [Line Items]
Assets	$ 39,909,000,000		$ 37,990,000,000
Liabilities	33,472,000,000		31,705,000,000
Revenues	1,097,000,000	540,000,000
Net income	145,000,000	106,000,000
Transfers of Finance Receivables	2,900,000,000
Transfers of Finance Receivables Outstanding Balance	2,800,000,000
GERMANY | Subsidiaries [Member]
Variable Interest Entity [Line Items]
Assets	4,000,000,000
Liabilities	3,100,000,000
Revenues	58,000,000
Net income	$ 10,000,000