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Share-Based Compensation - Summary of Stock Option Activity (Details)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Shares  
Stock options outstanding - balance at beginning of period (in shares) | shares 14,689
Granted (in shares) | shares 168
Forfeited (in shares) | shares (214)
Exercised (in shares) | shares (4,414)
Stock options outstanding - balance at end of period (in shares) | shares 10,229
Stock options exercisable (in shares) | shares 8,822
Weighted- Average Exercise Price  
Stock options outstanding - balance at beginning of period (in dollars per share) | $ / shares $ 50.82
Granted (in dollars per share) | $ / shares 111.86
Forfeited (in dollars per share) | $ / shares 108.74
Exercised (in dollars per share) | $ / shares 37.51
Stock options outstanding - balance at end of period (in dollars per share) | $ / shares 56.36
Stock options exercisable (in dollars per share) | $ / shares $ 48.38
Weighted- Average Remaining Contractual Term (Years)  
Stock options outstanding (in years) 4 years 3 months 3 days
Stock options exercisable (in years) 3 years 7 months 24 days
Aggregate Intrinsic Value (In millions)  
Stock options outstanding | $ $ 498
Stock options exercisable | $ $ 492