Stock-Based Compensation Plans - Summary of Stock Options Activity (Details) - Amended and Restated 2004 Stock Incentive Plan $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Shares Subject to Options
Outstanding as of beginning of the period (in shares) | shares	1,793
Granted (in shares) | shares	0
Exercised (in shares) | shares	(918)
Forfeited (in shares) | shares	0
Expired (in shares) | shares	0
Outstanding as of end of the period (in shares) | shares	875
Weighted- Average Exercise Price
Outstanding as of beginning of the period (in dollars per share) | $ / shares	$ 63.91
Granted (in dollars per share) | $ / shares	0.00
Exercised (in dollars per share) | $ / shares	60.09
Forfeited (in dollars per share) | $ / shares	0.00
Expired (in dollars per share) | $ / shares	0.00
Outstanding as of end of the period (in dollars per share) | $ / shares	$ 67.92
Weighted-Average Remaining Contractual Term, Outstanding at end of period, years	2 years 9 months 3 days
Aggregate Intrinsic Value, Outstanding, at end of period | $	$ 67