Adoption of New Revenue Recognition Standard - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total Revenues	[1]	$ 2,352	$ 2,497	$ 7,297	$ 7,518
Increase to retained earnings	[2]			$ 120
Economic life of leased product				5 years
Lessor, Operating Lease, Term of Contract		5 years		5 years
Contract liabilities		$ 108		$ 108		$ 91
Contract liability amortization period				30 months
Incremental Direct Costs of Obtaining a Contract		22		$ 62
Capitalized contract costs amortization reported in decrease (increase) in other current and long-term assets		24		72
Deferred incremental direct costs net of accumulated amortization		$ 174		$ 174
Deferred incremental direct costs, amortization period		4 years		4 years
Contract Fulfillment Costs and Inducements
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Capitalized contract costs, deferred		$ 10		$ 10
Sales
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total Revenues		943	$ 981	2,893	$ 2,927
ASU 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Transition asset				153
Increase to retained earnings				117
ASU 2014-09 | Sales
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total Revenues		$ 8		$ 25

[1] Geographic area data is based upon the location of the subsidiary reporting the revenue.

[2] Includes $117 related to the adoptions of the new Revenue Recognition Standard, see Note 2 for additional information, and $3 related to our share of Fuji Xerox's adoption of ASU 2016-01 - Financial Instruments - Classification and Measurement.