Finance Receivables, Net - Sales of Finance Receivables (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Collections on beneficial interest	$ 79		$ 58		$ 0
Estimated (Decrease) Increase to Operating Cash Flows	(68)	[1]	(55)	[1]	(78)	[1]
Document Technology [Member]
Beneficial interests received	77		150
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	64		124
Finance Receivables [Member]
Net carrying value (NCV) sold	0		676		682
Allowance included in NCV	0		17		18
Cash proceeds received	0		635		630
Beneficial interests received	0		86		101
Pre-tax gain on sales	0		40		44
Net fees and expenses	0		5		5
Finance Receivables Sold and Derecognized	549		1,006
Finance receivables sold and derecognized sales value	596		1,098
Net cash received from sales of finance receivables net of beneficial interest, fees and expenses	0	[2]	631	[2]	625	[2]
Impact from prior sales of finance receivables	(527)	[3]	(392)	[3]	(45)	[3]
Collections on beneficial interest	94		58		0
Estimated (Decrease) Increase to Operating Cash Flows	$ (433)		$ 297		$ 580

[1] Represents the difference between current and prior year fourth quarter receivable sales adjusted for the effects of: (i) the deferred proceeds, (ii) collections prior to the end of the year and (iii) currency.

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

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