Stock-Based Compensation - Narrative (Detail) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)	3,900
Tax benefits recorded on stock based compensation	$ 22.1	$ 25.5	$ 32.8
Aggregate intrinsic value of options exercisable	$ 379.1
Weighted average remaining contractual term of options exercisable (in years)	3 years
Weighted-average remaining contractual life for options outstanding (in years)	3 years 8 months 12 days
Restricted Stock And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock and restricted stock units vested	$ 66.6	$ 34.4	$ 20.2
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to issue grants (in shares)	20,650

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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