Finance Receivables, Net - Sales of Finance Receivables (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net carrying value (NCV) sold				$ 676	$ 682
Allowance included in NCV				17	18
Cash proceeds received				635	630
Beneficial interests received				86	101
Finance Receivables Sold and Derecognized		$ 238	$ 549
Finance receivables sold and derecognized sales value		256	596
Net cash received from sales of finance receivables net of beneficial interest, fees and expenses	[1]	0	0	631	625
Impact from prior sales of finance receivables	[2]	(342)	(527)	(392)	(45)
Collections on beneficial interest		46	79	58
Estimated (Decrease) Increase to Operating Cash Flows		(286)	(433)	297	580
Document Technology [Member]
Beneficial interests received		$ 38	77
Finance Receivable Beneficial Interest Weighted Average Life		2 years
Document Technology [Member] | Other Current Assets [Member]
Beneficial interest from sale of finance receivables held by bankruptcy remote subsidiaries		$ 30	64
Financing Receivable [Member]
Collections on beneficial interest		$ 56	$ 94	$ 58	$ 0

[1] Net of beneficial interest, fees and expenses.

[2] Represents cash that would have been collected if we had not sold finance receivables.