Finance Receivables Accretable Yield (Details) (Consumer Finance Receivables, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
North America Segment [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ 7	$ 19	$ 40	$ 73
Pre-Acquisition Portfolio
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	177	394	255	404
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions		0		127
Accretion of accretable yield	(43)	(85)	(154)	(269)
Foreign Currency Translation	(3)	1	(3)	(6)
Balance at end of period	138	329	138	329
Pre-Acquisition Portfolio | North America Segment [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	133	298	181	404
Accretion of accretable yield	(32)	(65)	(113)	(225)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	0	0	33	54
Foreign Currency Translation	0	0	0	0
Balance at end of period	101	233	101	233
Pre-Acquisition Portfolio | International Segment [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	44	96	74	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions		0		127
Accretion of accretable yield	(11)	(20)	(41)	(44)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	7	19	7	19
Foreign Currency Translation	(3)	1	(3)	(6)
Balance at end of period	$ 37	$ 96	$ 37	$ 96