Earnings per Share - Reconciliation (Details) $ / shares in Units, shares in Thousands, $ in Millions			3 Months Ended																			9 Months Ended				12 Months Ended
		Jun. 14, 2017	Sep. 30, 2017 USD ($) $ / shares shares		Mar. 31, 2017 USD ($) $ / shares	Dec. 31, 2016 $ / shares	[2]	Sep. 30, 2016 USD ($) $ / shares shares		Jun. 30, 2016 $ / shares	[2]	Mar. 31, 2016 $ / shares	[2]	Dec. 31, 2015 $ / shares	[2]	Sep. 30, 2015 $ / shares	[2]	Jun. 30, 2015 $ / shares	[2]	Mar. 31, 2015 $ / shares	[2]	Sep. 30, 2017 USD ($) $ / shares shares		Sep. 30, 2016 USD ($) $ / shares shares		Dec. 31, 2016 USD ($) $ / shares		Dec. 31, 2015 USD ($) $ / shares		Dec. 31, 2014 USD ($) $ / shares
Schedule of Basic And Diluted Earnings [Line Items]
Stock Split, Conversion Ratio		0.25
Basic Earnings (Loss) per Share:
Net income from continuing operations attributable to Xerox			$ 176		$ 46			$ 175														$ 388		$ 437		$ 622		$ 822		$ 1,011
Adjusted Net income from continuing operations available to common shareholders			172					169														377		419
Net income (loss) from discontinued operations attributable to Xerox			3					8														(3)		(65)
Adjusted Net income available to common shareholders			$ 175					$ 177														$ 374		$ 354
Weighted average common shares outstanding (in shares) | shares			254,510					253,430														254,259		253,340
Continuing operations (dollars per share) | $ / shares			$ 0.68	[1]	$ 0.17	$ 0.71		$ 0.66	[1],[2]	$ 0.75		$ 0.24		$ 0.97		$ 0.75		$ 0.72		$ 0.58		$ 1.49	[1]	$ 1.65	[1]	$ 2.36	[2]	$ 3.00	[2]	$ 3.42
Discontinued operations (dollars per share) | $ / shares	[1]		0.01					0.03														(0.01)		(0.25)
Total Basic Earnings per Share | $ / shares			$ 0.69	[1]	$ 0.14	(3.35)		$ 0.69	[1],[2]	0.60		0.10		1.03		(0.16)		0.01		0.72		$ 1.48	[1]	$ 1.40	[1]	$ (1.95)	[2]	$ 1.59	[2]	$ 3.37
Diluted Earnings (Loss) per Share:
Net income from continuing operations attributable to Xerox			$ 176		$ 46			$ 175														$ 388		$ 437		$ 622		$ 822		$ 1,011
Adjusted Net income from continuing operations available to common shareholders			176					169														377		419
Net income (loss) from discontinued operations attributable to Xerox			3					8														(3)		(65)
Adjusted Net income available to common shareholders			$ 179					$ 177														$ 374		$ 354
Weighted average common shares outstanding (in shares) | shares			254,510					253,430														254,259		253,340
Common shares issuable with respect to:
Adjusted Weighted Average Common Shares Outstanding - Diluted (in shares) | shares			263,385					256,324														256,429		255,594
Continuing operations (dollars per share) | $ / shares			$ 0.67	[1]	$ 0.16	0.70		$ 0.66	[1],[2]	0.75		0.23		0.96		0.75		0.71		0.57		$ 1.47	[1]	$ 1.64	[1]	$ 2.33	[2]	$ 2.97	[2]	$ 3.37
Discontinued operations (dollars per share) | $ / shares	[1]		0.01					0.03														(0.01)		(0.26)
Total Diluted Earnings per Share | $ / shares			$ 0.68	[1]	$ 0.14	$ (3.30)		$ 0.69	[1],[2]	$ 0.60		$ 0.10		$ 1.02		$ (0.16)		$ 0.01		$ 0.71		$ 1.46	[1]	$ 1.38	[1]	$ (1.93)	[2]	$ 1.58	[2]	$ 3.32
Stock options [Member]
Common shares issuable with respect to:
Stock options and Restricted stock and performance shares (in shares) | shares			0					150														0		173
Restricted Stock and Performance Shares [Member]
Common shares issuable with respect to:
Stock options and Restricted stock and performance shares (in shares) | shares			2,133					2,744														2,170		2,081
Convertible Preferred Stock [Member]
Common shares issuable with respect to:
Convertible preferred stock (in shares) | shares			6,742					0														0		0
Earnings (loss) per share, basic [Member]
Basic Earnings (Loss) per Share:
Accrued dividends on preferred stock			$ (4)					$ (6)														$ (11)		$ (18)
Earnings (loss) per share, diluted [Member]
Basic Earnings (Loss) per Share:
Accrued dividends on preferred stock			$ 0					$ (6)														$ (11)		$ (18)

[1] Reflects our one-for-four reverse stock split that became effective on June 14, 2017. Refer to Note 1 - Basis of Presentation for further information.

[2] Note: The sum of quarterly earnings per share may differ from the full-year amounts due to rounding, or in the case of diluted earnings per share, because securities that are anti-dilutive in certain quarters may not be anti-dilutive on a full-year basis.