Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 333	$ 551	$ 350
Denominator:
Shares used in net income per common share – basic	59.7	55.4	55.1
Effect of dilutive securities	0.2	0.3	0.2
Shares used in net income per common share – diluted	59.9	55.7	55.3
Net income per common share:
Basic	$ 5.57	$ 9.95	$ 6.36
Net income per common share:
Diluted	$ 5.56	$ 9.90	$ 6.33