Annual report [Section 13 and 15(d), not S-K Item 405]

Stock-Based Compensation - Outstanding Awards and Exercises (Details)

v3.25.0.1
Stock-Based Compensation - Outstanding Awards and Exercises (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Awards      
Compensation cost not yet recognized      
Unrecognized compensation cost options $ 18    
Period over which unrecognized compensation cost will be recognized 1 year 2 months 12 days    
Awards | Series A common stock      
Options      
Outstanding ending balance (in shares) 0    
Awards | Series C common stock      
Options      
Outstanding beginning balance (in shares) 4,063,000    
Options granted (in shares) 183,000    
Exercised (in shares) (1,510,000)    
Forfeited/Cancelled (in shares) (87,000)    
Outstanding ending balance (in shares) 2,649,000 4,063,000  
Number of awards exercisable (in shares) 2,422,000    
WAEP      
WAEP Outstanding beginning balance (in dollars per share) $ 96.23    
WAEP Options granted (in dollars per share) 56.2    
WAEP options exercised (in dollars per share) 48.35    
WAEP options forfeited/cancelled (in dollars per share) 95.17    
WAEP Outstanding ending balance (in dollars per share) 120.8 $ 96.23  
WAEP options exercisable (in dollars per share) $ 124.86    
Options additional disclosures      
Weighted average remaining contractual life outstanding 3 years 7 months 6 days    
Weighted average remaining contractual life exercisable 3 years 4 months 24 days    
Aggregate intrinsic value outstanding $ 3    
Aggregate intrinsic value exercisable $ 3    
Awards | Series B and C common stock      
Compensation cost not yet recognized      
Shares reserved for future issuance upon exercise of stock options 3,000,000    
Employee Stock Option      
Options additional disclosures      
Aggregate intrinsic value of options exercised during period $ 52 $ 1 $ 3
Employee Stock Option | Series B common stock      
Options      
Forfeited/Cancelled (in shares) (150,000) (69,000)  
WAEP      
WAEP options forfeited/cancelled (in dollars per share) $ 97.21 $ 97.21  
Employee Stock Option | Series A and B common stock      
Options      
Options granted (in shares) 0 0 0
Employee Stock Option | CEO | Series B common stock      
Options      
Exercised (in shares)     (37,000)
Outstanding ending balance (in shares) 96,000    
WAEP      
WAEP options exercised (in dollars per share)     $ 97.21
WAEP Outstanding ending balance (in dollars per share) $ 94.05    
Options additional disclosures      
Weighted average remaining contractual life outstanding 3 months 18 days    
Aggregate intrinsic value outstanding $ 0    
Employee Stock Option | CEO | Series C common stock      
Options      
Options granted (in shares) 183,000 129,000 136,000