Net Income (Loss) Per Common Share - Calculations for Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income (loss)—basic and diluted	$ 225	$ (266)
Denominator:
Basic weighted-average common shares outstanding (in shares)	157.2	160.4
Diluted weighted-average shares	158.5	160.4
Earnings (loss) per share:
Basic (in USD per share)	$ 1.43	$ (1.66)
Diluted (in USD per share)	$ 1.42	$ (1.66)
Number of anti-dilutive stock-based awards (in shares)	1.0	2.3
Stock Options
Denominator:
Effect of stock-based awards (in shares)	0.8	0.0
Nonvested shares
Denominator:
Effect of stock-based awards (in shares)	0.5	0.0