Stock-Based Compensation - Summary of Changes in Number of Shares of Common Stock Under Option (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Shares
Shares, outstanding, beginning balance (in shares)	5,301	5,447	4,964
Shares, granted (in shares)	411	649	1,097
Shares, exercised (in share)	(648)	(544)	(592)
Shares, forfeited (in shares)	(81)	(251)	(22)
Shares, outstanding, ending balance (in shares)	4,983	5,301	5,447
Weighted Average Exercise Price
Weighted average exercise price, outstanding, beginning balance (in dollars per share)	$ 188.12	$ 176.52	$ 146.69
Weighted average exercise price, granted (in dollars per share)	222.51	223.66	261.85
Weighted average exercise price, exercised (in dollars per share)	172.01	94.79	82.50
Weighted average exercise price, forfeited (in dollars per share)	241.78	230.60	230.14
Weighted average exercise price, outstanding, ending balance (in dollars per share)	$ 192.18	$ 188.12	$ 176.52
Options, Additional Disclosures [Abstract]
Shares, expected to vest (in shares)	952
Weighted average exercise price of options, expected to vest (in dollars per share)	$ 226.20
Options exercisable at end of year, options outstanding (in shares)	3,182	3,512	3,798	3,994
Weighted average exercise price of exercisable options, outstanding (in dollars per share)	$ 163.54	$ 159.46	$ 145.18	$ 130.37
Weighted average fair value of options granted during the year (in dollars per share)	$ 66.28	$ 65.23	$ 72.84
Aggregate intrinsic value, options outstanding	$ 451,039	$ 113,681	$ 257,707	$ 626,107
Aggregate intrinsic value, options exercised during period	$ 40,983	$ 64,783	$ 83,686