Accumulated Other Comprehensive Loss - Schedule of Comprehensive Income (Loss) Attributable to Minority Shareholders (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Equity [Abstract]
Net Income (Loss) Attributable to Minority Shareholders	$ 2	$ 5	$ 12	$ 0
Other Comprehensive Income (Loss):
Foreign currency translation	(1)	(2)	(9)	(11)
Comprehensive Income (Loss) Attributable to Minority Shareholders	$ 1	$ 3	$ 3	$ (11)