Stock-Based Compensation (Stock Options Outstanding, Exercisable and Activity) (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Number of Shares
Beginning Balance	3,340,402
Granted	487,277
Exercised	(158,837)
Forfeited/Expired	(151,391)
Ending Balance	3,517,451	3,340,402
Vested or expected to vest, at end of period	3,444,650
Exercisable, at end of period	2,039,716
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 110.98
Granted (in dollars per share)	151.87
Exercised (in dollars per share)	77.24
Forfeited/Expired (in dollars per share)	134.34
Ending Balance (in dollars per share)	117.16	$ 110.98
Vested or expected to vest, at end of period (in dollars per share)	116.57
Exercisable, at end of period (in dollars per share)	$ 104.58
Weighted Average Remaining Contractual Life (in years)
Outstanding	5 years 8 months 12 days	6 years 1 month 6 days
Vested or expected to vest, at end of period	5 years 7 months 6 days
Exercisable, at end of period	4 years
Intrinsic Value (in millions)
Outstanding	$ 47
Vested or expected to vest, at end of period	47
Exercisable, at end of period	$ 43