Fair Value of Financial Assets and Liabilities - Estimated Fair Values of Financial Assets and Liabilities Not Measured at Fair Value on a Recurring Basis (Details) - Nonrecurring - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 2,209	$ 2,625
Accounts receivable, net	891	883
Short-term debt and current portion of long-term debt	646	394
Long-term debt	3,673	4,050
Carrying Amount | Xerox Holdings Corporation
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,494	1,493
Carrying Amount | XEROX CORPORATION
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,892	2,187
Carrying Amount | Xerox - Other Subsidiaries
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	287	370
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,209	2,625
Accounts receivable, net	891	883
Short-term debt and current portion of long-term debt	652	396
Long-term debt	3,846	4,266
Fair Value | Xerox Holdings Corporation
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,565	1,596
Fair Value | XEROX CORPORATION
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,993	2,298
Fair Value | Xerox - Other Subsidiaries
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 288	$ 372