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Stock Option Activity and Related Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Options, Outstanding at beginning of year 8,160,625  
Options, Granted 710,000  
Options, Exercised (1,009,329)  
Options, Forfeited (83,188)  
Outstanding at December 31, 2022 7,778,108  
Options, Exercisable at December 31, 2022 5,666,608  
Weighted average exercise price, Outstanding at beginning of year $ 113.06  
Weighted average exercise price, Granted 125.54  
Weighted average exercise price, Exercised 99.89  
Weighted average exercise price, Forfeited 122.41  
Weighted average exercise price, Outstanding at December 31, 2022 115.05  
Weighted average exercise price, Exercisable at December 31, 2022 $ 114.61  
Aggregate intrinsic value, Outstanding $ 82.5 $ 37.1
Aggregate intrinsic value, Exercisable as of December 31, 2022 $ 65.4