Income Taxes - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Deferred tax benefit relating to tax cuts and jobs act	$ 764			$ 764
Effective tax rate without TCJA				29.00%
Effective tax rate		21.00%	20.00%	(1.00%)
Valuation allowance		$ 119	$ 119	$ 126	$ 122
Undistributed earnings		5,200
Deferred tax benefit related to impact of TCJA				764
Unrecognized tax benefits that would impact effective tax rate		85	81
Increases in unrecognized tax benefits		17
Decrease in unrecognized tax benefits		13
Unrecognized tax benefits		103	98	115	$ 112
Income tax expense (benefit) for interest and penalties		5	(6)	$ (1)
Unrecognized tax benefits, income tax penalties and interest accrued		33	28
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		119	133
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		110	201
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		282	$ 285
Other Noncurrent Liabilities
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits		90
Unrecognized tax benefits, income tax penalties and interest accrued		23
Other Current Liabilities
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits		13
Unrecognized tax benefits, income tax penalties and interest accrued		$ 10