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Stock-Based Compensation Plans - Summary of Option Activity (Details)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Shares  
Shares, Outstanding, Beginning Balance (in shares) | shares 1.0
Shares, Granted (in shares) | shares 0.2
Shares, Exercised (in shares) | shares (0.2)
Shares, Outstanding, Ending Balance (in shares) | shares 1.0
Shares, Vested and expected to vest (in shares) | shares 1.0
Shares, Exercisable (in shares) | shares 0.6
Weighted Average Exercise Price Per Share  
Weighted Average Exercise Price Per Share, Beginning Balance (in usd per share) | $ / shares $ 132.80
Weighted Average Exercise Price Per Share, Granted (in usd per share) | $ / shares 249.99
Weighted Average Exercise Price Per Share, Exercised (in usd per share) | $ / shares 101.03
Weighted Average Exercise Price Per Share, Ending Balance (in usd per share) | $ / shares 166.16
Weighted Average Exercise Price Per Share, Vested and expected to vest (in usd per share) | $ / shares 165.26
Weighted Average Exercise Price Per Share, Exercisable (in usd per share) | $ / shares $ 119.88
Weighted Average Remaining Contractual Term  
Weighted Average Remaining Contractual Term, Outstanding (in years) 5 years 9 months 18 days
Weighted Average Remaining Contractual Term, Vested and expected to vest (in years) 5 years 8 months 12 days
Weighted Average Remaining Contractual Term (in years) 4 years 4 months 24 days
Aggregate Intrinsic Value  
Aggregate Intrinsic Value, Outstanding | $ $ 224
Aggregate Intrinsic Value, Vested and expected to vest | $ 221
Aggregate Intrinsic Value, Exercisable | $ $ 159