Shareholders' Equity - Share-based Compensation, Activity (Details) - $ / shares		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Restricted Stock Units (RSUs) [Member]
Awards Other Than Options, Number of Shares [Roll Forward]
Outstanding at January 1	[1]	1,807,000	598,000		3,049,000
Granted		1,436,000	1,793,000	[1]	200,000	[1]
Vested		(117,000)	(79,000)	[1]	(2,548,000)	[1]
Cancelled		(270,000)	(137,000)	[1]	(103,000)	[1]
Outstanding at December 31		2,856,000	1,807,000	[1]	598,000	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at January 1	[1],[2]	$ 30.10	$ 44.20		$ 38.00
Granted		31.39	38.28	[1],[2]	44.32	[1],[2]
Vested		36.99	38.48	[1],[2]	31.44	[1],[2]
Cancelled		29.03	40.48	[1],[2]	37.08	[1],[2]
Outstanding at December 31		$ 30.65	$ 30.10	[1],[2]	$ 44.20	[1],[2]
Performance Shares [Member]
Awards Other Than Options, Number of Shares [Roll Forward]
Outstanding at January 1	[1]	5,054,000	5,802,000		5,180,000
Granted		1,349,000	1,320,000	[1]	2,368,000	[1]
Vested		(1,413,000)	(8,000)	[1]	(817,000)	[1]
Cancelled		(1,873,000)	(1,234,000)	[1]	(929,000)	[1]
Outstanding at December 31		3,117,000	5,054,000	[1]	5,802,000	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at January 1	[1],[2]	$ 33.98	$ 46.68		$ 45.44
Granted		32.80	37.40	[1],[2]	42.72	[1],[2]
Vested		37.44	45.32	[1],[2]	31.60	[1],[2]
Cancelled		34.59	47.36	[1],[2]	42.96	[1],[2]
Outstanding at December 31		$ 31.54	$ 33.98	[1],[2]	$ 46.68	[1],[2]
Conduent [Domain] | Restricted Stock Units (RSUs) [Member]
Awards Other Than Options, Number of Shares [Roll Forward]
Other Share Increase (Decrease)		0	(786,000)	[1]	0	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Other Share Increase (Decrease), per share		$ (0.00)	$ 40.28	[1],[2]	$ (0.00)	[1],[2]
Conduent [Domain] | Performance Shares [Member]
Awards Other Than Options, Number of Shares [Roll Forward]
Other Share Increase (Decrease)		0	(1,974,000)	[1]	0	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Other Share Increase (Decrease), per share		$ (0.00)	$ 44.36	[1],[2]	$ (0.00)	[1],[2]
Conduent [Domain] | Stock options
Awards Other Than Options, Number of Shares [Roll Forward]
Other Share Increase (Decrease)		0	376,000	[1]	(0.00)	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Other Share Increase (Decrease), per share		$ (0.00)	$ (26.80)	[1],[2]	$ (0.00)	[1],[2]
Xerox shares, granted in conversion [Member] | Restricted Stock Units (RSUs) [Member]
Awards Other Than Options, Number of Shares [Roll Forward]
Other Share Increase (Decrease)		0	418,000	[1]	0	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Other Share Increase (Decrease), per share		$ (0.00)	$ 30.10	[1],[2]	$ (0.00)	[1],[2]
Xerox shares, granted in conversion [Member] | Performance Shares [Member]
Awards Other Than Options, Number of Shares [Roll Forward]
Other Share Increase (Decrease)		0	1,148,000	[1]	0	[1]
Awards Other Than Options, Weighted Average Grant Date Fair Value [Roll Forward]
Other Share Increase (Decrease), per share		$ (0.00)	$ 33.98	[1],[2]	$ (0.00)	[1],[2]

[1] Share activity and weighted average grant date fair values include immaterial rounding due to our one-for-four reverse stock split.

[2] Exercise price for stock options.