Segment Reporting - Segment Revenue and Segment Profit (Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 primaryreportablesegment		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Reportable segments, number	2
Revenue	$ 20,952	[1]	$ 21,140	[1]	$ 21,268	[1]
Financing	483	[1]	597	[1]	632	[1]
Total Revenues	21,435	[1]	21,737	[1]	21,900	[1]
Interest expense	406	[1],[2]	430	[1],[2]	478	[1],[2]
Segment profit (loss)	1,901	[1],[3]	1,982	[1],[3]	2,062	[1],[3]
Equity in net income of unconsolidated affiliates	169	[1]	152	[1]	149	[1]
Services Segment [Member]
Segment Reporting Information [Line Items]
Revenue	11,792	[1]	11,453	[1]	10,754	[1]
Financing	67	[1]	75	[1]	83	[1]
Total Revenues	11,859		11,528		10,837
Interest expense	19	[1]	22	[1]	25	[1]
Segment profit (loss)	1,157	[1],[3]	1,173	[1],[3]	1,207	[1],[3]
Equity in net income of unconsolidated affiliates	34	[1]	30	[1]	31	[1]
Document Technology Segment [Member]
Segment Reporting Information [Line Items]
Revenue	8,500	[1]	8,951	[1]	9,722	[1]
Financing	408	[1]	511	[1]	537	[1]
Total Revenues	8,908	[1]	9,462	[1]	10,259	[1]
Interest expense	140	[1]	172	[1]	202	[1]
Segment profit (loss)	966	[1],[3]	1,065	[1],[3]	1,140	[1],[3]
Equity in net income of unconsolidated affiliates	135	[1]	122	[1]	118	[1]
Other [Member]
Segment Reporting Information [Line Items]
Revenue	660	[1]	736	[1]	792	[1]
Financing	8	[1]	11	[1]	12	[1]
Total Revenues	668	[1]	747	[1]	804	[1]
Interest expense	247	[1]	236	[1]	251	[1]
Segment profit (loss)	(222)	[1],[3]	(256)	[1],[3]	(285)	[1],[3]
Equity in net income of unconsolidated affiliates	$ 0	[1]	$ 0	[1]	$ 0	[1]
Outsourcing Offerings [Member] | Services Segment [Member]
Segment Reporting Information [Line Items]
Services segment decription of offerings	3

[1] Asset information on a segment basis is not disclosed as this information is not separately identified and internally reported to our Chief Operating Decision Maker (CODM).

[2] (1)Includes Equipment financing interest expense, as well as non-financing interest expense included in Other expenses, net in the Consolidated Statements of Income.

[3] Depreciation and amortization expense, which is recorded in Cost of Sales, Cost of Services, RD&E and SAG are included in segment profit above. This information is neither identified nor internally reported to our CODM.