Other Comprehensive (Loss) Income - Accumulated Other Comprehensive Loss (AOCL) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ 5,195	$ 5,295	$ 5,596	$ 5,452	$ 5,481	$ 5,594
Cumulative translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(1,842)		(1,720)
Other unrealized (losses) gains, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(1)		2
Benefit plans net actuarial losses and prior service credits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(1,492)		(1,614)
Total Accumulated Other Comprehensive Loss Attributable to Xerox Holdings/Xerox
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ (3,335)	$ (3,265)	$ (3,332)	$ (3,593)	$ (3,681)	$ (3,646)