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Stock-Based Compensation Expense - Schedule of Restricted Stock Units and Restricted Stock Awards Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Weighted-Average Grant Date Fair Value (per Share)        
Stock-based compensation expense $ 282 $ 285 $ 557 $ 544
Restricted Stock Units (“RSUs”) and Unregistered Restricted Stock Awards (“RSAs”) outstanding        
Number of Shares (in thousands)        
Beginning balance (in shares)     24,524  
Granted (in shares)     15,277  
Vested (in shares)     (9,654)  
Cancelled (in shares)     (2,483)  
Ending balance (in shares) 27,664   27,664  
Weighted-Average Grant Date Fair Value (per Share)        
Beginning balance (in dollars per share)     $ 63.59  
Granted (in dollars per share)     53.71  
Vested (in dollars per share)     54.74  
Cancelled (in dollars per share)     62.28  
Ending balance (in dollars per share) $ 61.34   $ 61.34  
PSUs        
Number of Shares (in thousands)        
Beginning balance (in shares)     1,826  
Granted (in shares)     773  
Vested (in shares)     (561)  
Cancelled (in shares)     (312)  
Ending balance (in shares) 1,726   1,726  
Weighted-Average Grant Date Fair Value (per Share)        
Beginning balance (in dollars per share)     $ 51.78  
Granted (in dollars per share)     72.52  
Vested (in dollars per share)     42.34  
Cancelled (in dollars per share)     52.29  
Ending balance (in dollars per share) $ 64.04   $ 64.04  
Stock-based compensation expense $ 2 $ 17 $ 9 $ 23