Supplementary Financial Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Supplemental Financial Information [Abstract]
Provision for receivables	$ 17	$ 13	$ 104	$ 40
Provision for inventory	6	3	20	18
Provision for product warranty	3	3	6	10
Depreciation of buildings and equipment	21	24	64	77
Depreciation and obsolescence of equipment on operating leases	45	56	142	172
Amortization of internal use software	11	15	32	48
Amortization of acquired intangible assets	13	9	34	35
Amortization of customer contract costs	20	24	63	70
Cost of additions to land, buildings and equipment	9	11	36	30
Cost of additions to internal use software	9	6	24	18
Common stock dividends - Xerox Holdings	57	57	165	172
Preferred stock dividends - Xerox Holdings	4	4	11	11
Repurchases related to stock-based compensation - Xerox Holdings	$ 9	$ 10	$ 19	$ 20