v3.25.2
Stock-Based Compensation - Outstanding Awards and Exercises (Details)
$ / shares in Units, shares in Thousands, $ in Millions
 6 Months Ended
Jun. 30, 2025
USD ($)
$ / shares
shares
Awards | Common stock, all series  
Compensation cost not yet recognized  
Shares reserved for future issuance upon exercise of stock options 2,600
Employee Stock Option  
Options  
Granted (in shares) 0
Compensation cost not yet recognized  
Unrecognized compensation cost options | $ $ 9
Period over which unrecognized compensation cost will be recognized 1 year 6 months
Employee Stock Option | Series A common stock  
Options  
Outstanding ending balance (in shares) 0
Employee Stock Option | Series B common stock  
Options  
Outstanding ending balance (in shares) 13
Number of awards exercisable (in shares) 13
Expired 83
WAEP  
WAEP Outstanding ending balance (in dollars per share) | $ / shares $ 100.19
WAEP options expired | $ / shares $ 93.13
Options additional disclosures  
Weighted average remaining contractual life outstanding 8 months 12 days
Aggregate intrinsic value outstanding | $ $ 0
Employee Stock Option | Series C common stock  
Options  
Outstanding beginning balance (in shares) 2,649
Exercised (in shares) (70)
Outstanding ending balance (in shares) 2,579
Number of awards exercisable (in shares) 2,355
WAEP  
WAEP Outstanding beginning balance (in dollars per share) | $ / shares $ 120.8
WAEP options exercised (in dollars per share) | $ / shares 77.82
WAEP Outstanding ending balance (in dollars per share) | $ / shares 121.97
WAEP options exercisable (in dollars per share) | $ / shares $ 126.19
Options additional disclosures  
Weighted average remaining contractual life outstanding 3 years
Weighted average remaining contractual life exercisable 2 years 9 months 18 days
Aggregate intrinsic value outstanding | $ $ 18
Aggregate intrinsic value exercisable | $ $ 14