Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Loss (AOCL) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ 5,452	$ 5,481	$ 5,594	$ 4,886	$ 4,992	$ 5,039
Cumulative translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(1,954)		(1,961)
Other unrealized gains (losses), net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	2		(2)
Benefit plans net actuarial losses and prior service credits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(1,641)		(1,683)
Total Accumulated other comprehensive loss attributable to Xerox Holdings/Xerox
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ (3,593)	$ (3,681)	$ (3,646)	$ (3,850)	$ (3,647)	$ (3,565)