Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Weighted-average shares used in basic computations	100.6	99.1	100.1	98.8
Dilutive effect of exercise of equity grants outstanding	1.1	0.4	1.1	0.7
Dilutive effect of 2028 Convertible Notes	0.0	0.0	0.0	0.3
Weighted-average shares used in diluted computations	101.7	99.5	101.2	99.8