Finance Receivables (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 626		$ 626		$ 642
Troubled Debt Restructurings - Subsequent Default	11	5	20	10
Consumer Finance Receivables | North America Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ 0	$ 6	$ 33	$ 54
Commercial Finance Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Current Finance Receivable	99.80%		99.80%