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Share-Based Compensation - Summary of Share-based Compensation Expense (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]      
Option awards $ 11.5 $ 11.4 $ 9.8
Other share-based awards 30.7 39.2 40.9
Total share-based compensation before tax 42.2 50.6 50.7
Tax benefit 10.3 12.0 12.1
Total share-based compensation expense included in net income $ 31.9 $ 38.6 $ 38.6