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Share-Based Awards - Summary of Option Award (Detail)
$ / shares in Units, shares in Thousands, $ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Number of Shares Subject to Existing Options (in thousands)    
Beginning Balance (in shares) | shares 28,598  
Granted (in shares) | shares 6,890  
Exercised (in shares) | shares (1,454)  
Forfeited or cancelled (in shares) | shares (892)  
Ending Balance (in shares) | shares 33,142 28,598
Vested and exercisable (in shares) | shares 19,802  
Weighted- Average Exercise Price Per Share    
Beginning Balance (usd per share) | $ / shares $ 44.90  
Granted (usd per share) | $ / shares 42.63  
Exercised (usd per share) | $ / shares 38.84  
Forfeited or cancelled (usd per share) | $ / shares 48.28  
Ending Balance (usd per share) | $ / shares 44.60 $ 44.90
Vested and exercisable (usd per share) | $ / shares $ 44.96  
Weighted- Average Remaining Contractual Life (Years)    
Weighted-Average Remaining Contractual Life, Outstanding 7 years 7 years 1 month 6 days
Weighted-Average Remaining Contractual Life, Vested and exercisable 5 years 9 months 18 days  
Aggregate Intrinsic Value    
Aggregate Intrinsic Value, Outstanding | $ $ 173 $ 15
Aggregate Intrinsic Value, Vested and exercisable | $ $ 113