Finance Receivables Finance Receivables Summary (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts Notes And Loans Receivable Rollforward [Roll Forward]
Financing Receivable, Gross		$ 560
Consumer Loan [Member] | Pre-Acquisition Portfolio
Accounts Notes And Loans Receivable Rollforward [Roll Forward]
Financing Receivable, Gross		2,162
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	1,958
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	601
Proceeds from Collection of Finance Receivables	(1,348)
Change in Carrying Value Adjustment	2
Foreign Currency Translation - Finance Receivables	(39)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	1,174
Consumer Loan [Member] | Pre-Acquisition Portfolio | North America Segment [Member]
Accounts Notes And Loans Receivable Rollforward [Roll Forward]
Financing Receivable, Gross		2,162	4,366	7,724
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	1,958	4,027	7,300
Proceeds from Collection of Finance Receivables	(1,078)	(1,899)	(2,790)
Change in Carrying Value Adjustment	(54)	(170)	(483)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	826	1,958	4,027
Consumer Loan [Member] | Pre-Acquisition Portfolio | International Segment [Member]
Accounts Notes And Loans Receivable Rollforward [Roll Forward]
Financing Receivable, Gross		0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	601
Proceeds from Collection of Finance Receivables	(270)
Change in Carrying Value Adjustment	56
Foreign Currency Translation - Finance Receivables	(39)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	$ 348