Description of Business and Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Changes in Allowances for Uncollectible Accounts
Beginning balance	$ 21	$ 43	$ 43
Provision charged to expense	6	5	3
Write-offs, net of recoveries	(4)	(3)	(6)
Transfer to assets held for sale	(2)	0	0
Foreign currency translation	(1)	(1)	3
Ending balance	20	21	43
Adoption of new revenue recognition guidance
Changes in Allowances for Uncollectible Accounts
Beginning balance	$ 0	23	0
Ending balance		$ 0	$ 23