Earnings per Share, Reconciliation (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011
Basic Earnings per Share:
Net income attributable to Xerox	$ 269					$ 281
Accrued dividends on preferred stock	(6)	[1]				(6)	[1]
Adjusted Net Income Available to Common Shareholders	263					275
Weighted-average common shares outstanding (in shares)	1,337,397					1,400,077
Basic Earnings per Share (in dollars per share)	$ 0.20					$ 0.20
Diluted Earnings (Loss) per Share:
Net income attributable to Xerox	269					281
Accrued dividends on preferred stock	(6)	[1]				(6)	[1]
Adjusted Net Income Available to Common Shareholders	$ 263					$ 275
Weighted-average common shares outstanding (in shares)	1,337,397					1,400,077
Common shares issuable with respect to:
Convertible Securities (in shares)	1,992					1,992
Adjusted Weighted Average Common Shares Outstanding (in shares)	1,368,881					1,435,923
Diluted Earnings per Share (in dollars per share)	$ 0.19					$ 0.19
Dividends per common share (in dollars per share)	$ 0.0425		$ 0.0425	$ 0.0425	$ 0.0425	$ 0.0425
Stock Options [Member]
Common shares issuable with respect to:
Stock options and Restricted stock and performance shares (in shares)	7,143					13,570
Restricted Stock and performance shares [Member]
Common shares issuable with respect to:
Stock options and Restricted stock and performance shares (in shares)	22,349					20,284

[1] (3)Cash dividends declared on preferred stock of $20.00 per share in each quarter of 2012 and 2011.