Employee Benefit Plans - Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in benefit obligation:
Benefit obligation at beginning of year	$ 125	$ 134
Service cost	2	3	$ 3
Interest cost	4	4	4
Participant contributions	1	1
Actuarial loss (gain)	(21)	7
Benefits paid	(3)	(4)
Other, principally foreign exchange	(4)	6
Benefit obligation at end of year		125	134
Change in plan assets:
Fair value of plan assets at beginning of year	107	116
Actual gain (loss) on plan assets	18	(4)
Employer contributions	4	3
Participant contributions	1	1
Benefits paid	(3)	(4)
Other, principally foreign exchange	(2)	5
Fair value of assets at end of year	129	107	$ 116
Amounts recognized in the consolidated balance sheets:
Funded status (current)	0	0
Funded status (non-current)	(25)	(18)
Accumulated other comprehensive loss:
Unrecognized actuarial loss	34	25
Unrecognized prior service cost	0	0
Deferred taxes	(1)	(5)
Net amount recognized	8	2
Defined Benefit Plan, Accumulated Benefit Obligation	$ 154	$ 125