Consolidated Statements of Changes in Shareholder's Equity - USD ($) $ in Millions	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Noncontrolling interests
Balance at Dec. 31, 2020	$ 3,491	$ 745	$ 2	$ 3,142	$ (595)	$ 197
Increase (Decrease) in Shareholder's Equity [Roll Forward]
Profit of consolidated companies	143			140		3
Foreign currency translation, net of tax	(121)				(119)	(2)
Derivative financial instruments, net of tax	11				11
Balance at Mar. 31, 2021	3,524	745	2	3,282	(703)	198
Balance at Dec. 31, 2021	2,981	745	2	2,797	(774)	211
Increase (Decrease) in Shareholder's Equity [Roll Forward]
Profit of consolidated companies	144			143		1
Foreign currency translation, net of tax	10				8	2
Derivative financial instruments, net of tax	16				16
Balance at Mar. 31, 2022	$ 3,151	$ 745	$ 2	$ 2,940	$ (750)	$ 214