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Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for grant (in shares) 48.8    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Weighted average grant date fair value (in dollars per share) $ 749.74 $ 339.30 $ 239.88
Grants in period (in shares) 0.9 1.0 1.0
Shares issued in period (in shares) 0.3 0.5 0.8
Shares expected to be issued (in shares) 0.5    
Total compensation cost not yet recognized $ 485.1    
Period for recognition of the compensation cost not yet recognized 23 months    
Shareholder Value Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Weighted average grant date fair value (in dollars per share) $ 1,030.87 $ 349.63 $ 203.88
Shares issued in period (in shares) 0.2 0.3 0.5
Shares expected to be issued (in shares) 0.3    
Total compensation cost not yet recognized $ 61.4    
Period for recognition of the compensation cost not yet recognized 21 months    
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 2 years    
Weighted average grant date fair value (in dollars per share)   $ 335.86 $ 234.93
Shares issued in period (in shares) 0.4 0.5 0.7
Shares expected to be issued (in shares) 0.6    
Relative Value Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Weighted average grant date fair value (in dollars per share) $ 1,106.4 $ 397.95 $ 230.00
Shares issued in period (in shares) 0.1 0.1  
Shares expected to be issued (in shares) 0.1    
Total compensation cost not yet recognized $ 27.5    
Period for recognition of the compensation cost not yet recognized 22 months