Goodwill and Intangible Assets, Net - Intangible Assets by Major Class (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,738	$ 4,013
Accumulated Amortization	1,707	1,510
Net Amount	2,031	2,503
Intangible Assets from Continuing Operations, Gross (Excluding Goodwill)	4,073	4,013
Finite-Lived Intangible Assets from Continuing Operations, Accumulated Amortization	1,845	1,510
Finite-Lived Intangible Assets Including Discontinued Operations	2,228	2,503
Amortization of Intangible Assets	315	305	301
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2015	305
2016	305
2017	300
2018	300
2019	300
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Useful Life	12 years
Gross Carrying Amount	3,636	3,580
Accumulated Amortization	1,670	1,359
Net Amount	1,966	2,221
Distribution network [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Useful Life	25 years
Gross Carrying Amount	123	123
Accumulated Amortization	74	69
Net Amount	49	54
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Useful Life	20 years
Gross Carrying Amount	274	269
Accumulated Amortization	87	72
Net Amount	187	197
Technology, patents and non-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Useful Life	9 years
Gross Carrying Amount	40	41
Accumulated Amortization	14	10
Net Amount	26	31
Services Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Net Amount	1,677
Document Technology Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Net Amount	354
ITO [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	(335)	0
Accumulated Amortization	(138)	0
Net Amount	$ (197)	$ 0