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Net Income Per Share - Schedule of Basic and Diluted Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Net income - basic and diluted $ 808.7 $ 722.0
Weighted average shares - basic (in shares) 106.7 107.8
Weighted average shares - diluted (in shares) 111.2 115.1
Net income per share - basic (in dollars per share) $ 7.58 $ 6.70
Net income per share - diluted (in dollars per share) $ 7.27 $ 6.27
Stock options    
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Effect of dilutive securities (in shares) 2.5 5.3
Restricted stock awards and restricted stock units    
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Effect of dilutive securities (in shares) 2.0 2.0