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Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Options    
Outstanding at beginning of period (in shares) 1,981  
Granted (in shares) 423  
Exercised (in shares) (223)  
Forfeited or expired (in shares) 0  
Outstanding at end of period (in shares) 2,181 1,981
Vested or expected to vest (in shares) 2,160  
Options exercisable (in shares) 1,462  
Weighted-average exercise price    
Outstanding at beginning of period (in dollars per share) $ 195.81  
Granted (in shares) 243.51  
Exercised (in shares) 164.76  
Forfeited or expired (in shares) 0  
Outstanding, weighted average exercise price (in dollars per share) 208.24 $ 195.81
Vested or expected to vest (in dollars per share) 207.96  
Options exercisable (in dollars per share) $ 193.18  
Weighted-Average Remaining Contractual Term    
Outstanding (in years) 6 years 3 months 18 days 5 years 9 months 18 days
Vested or expected to vest (in years) 6 years 3 months 18 days  
Options exercisable (in years) 4 years 10 months 24 days  
Aggregate Intrinsic Value    
Outstanding $ 70 $ 74
Vested or expected to vest 70  
Options exercisable $ 66