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Summary of Stock Option Activity (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended
Jun. 30, 2023
Weighted Average Remaining Contractual Term (Years)  
Exercisable as of June 30, 2023 3 years 8 months 12 days
Expected to vest as of June 30, 2023 8 years 3 months 18 days
Total 5 years 6 months
Stock Option Awards  
Options outstanding, shares  
Beginning Balance 1,577
Granted 36
Exercised (83)
Forfeited/Expired (89)
Ending Balance 1,441
Exercisable as of June 30, 2023 880
Expected to vest as of June 30, 2023 561
Total 1,441
Weighted Average Exercise Price Per Share  
Beginning Balance $ 288.30
Granted 284.06
Exercised 145.15
Forfeited/Expired 400.57
Ending Balance 289.58
Exercisable as of June 30, 2023 238.07
Expected to vest as of June 30, 2023 370.46
Total $ 289.58
Aggregate Intrinsic Value  
Exercised $ 11,675
Exercisable as of June 30, 2023 140,690
Expected to vest as of June 30, 2023 35,325
Total $ 176,015