v3.26.3
Stock Option Plans - Stock Option Activity and Related Information (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Shares Under Option        
Shares Under Option, Beginning balance (in shares)     6.7  
Stock options granted (in shares) 0.0 0.0 1.5 0.8
Shares Under Option, Exercised (in shares)     (0.9)  
Shares Under Option, Forfeited or canceled (in shares)     (0.2)  
Shares Under Option, Ending balance (in shares) 7.1   7.1  
Shares Under Option, Exercisable at end of period (in shares) 2.7   2.7  
Shares Under Option, Ending unvested and expected to vest (in shares) 4.0   4.0  
Weighted Average Exercise Price        
Weighted Average Exercise Price, Beginning balance (in dollars per share)     $ 177.48  
Weighted Average Exercise Price, Granted (in dollars per share)     228.20  
Weighted Average Exercise Price, Exercised (in dollars per share)     108.31  
Weighted Average Exercise Price, Forfeited or canceled (in dollars per share)     215.04  
Weighted Average Exercise Price, Ending balance (in dollars per share) $ 195.33   195.33  
Weighted Average Exercise Price, Exercisable at end of period (in dollars per share) 133.96   133.96  
Weighted Average Exercise Price, Ending unvested and expected to vest (in dollars per share) $ 232.11   $ 232.11  
Weighted Average Remaining Contractual Term (in years), Ending balance 3 years 7 months 28 days   3 years 7 months 28 days  
Weighted Average Remaining Contractual Term (in years), Exercisable at end of year     1 year 9 months 3 days  
Weighted Average Remaining Contractual Term (in years), Ending unvested and expected to vest     4 years 9 months 3 days  
Aggregate Intrinsic Value, Ending Balance $ 332   $ 332  
Aggregate Intrinsic Value, Exercisable at end of year 256   256  
Aggregate Intrinsic Value, Ending unvested and expected to vest $ 74   $ 74