Retirement Plans - Schedule of Changes in Benefit Obligations and Plan Assets (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in Benefit Obligation
Benefit obligation at beginning of year	$ 54	$ 76
Service cost	4	4	$ 5
Interest cost	1	1	2
Actuarial (gain) loss	(7)	6
Benefits paid	(3)	(2)
Net of Held for sales add back/Divestiture	7	0
Translation difference	4	1
Held for sale	0	(32)
Benefit obligation at end of year	60	54	76
Change in Plan Assets
Fair value of plan assets at beginning of year	37	54
Actual return on plan assets	3	6
Company contributions	3	2
Benefits paid	(3)	(2)
Net of Held for sales add back/Divestiture	(1)	0
Translation difference	1	1
Held for sale	0	(24)
Fair value of plan assets at year end	40	37	$ 54
Funded status recognized in the balance sheet	$ (20)	$ (17)