Shareholders' Equity - Summary of Changes in Shareholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 3,845,346	$ 2,725,599	$ 3,506,849	$ 3,002,378
Net income	404,027	433,314	748,379	859,414
Purchase of common stock for treasury	(201,077)	(266,915)	(311,125)	(1,015,703)
Equity-based compensation	25,159	20,087	47,436	31,755
Proceeds from Options exercised	79,808	79,581	161,724	113,822
Ending Balance	$ 4,153,263	$ 2,991,666	$ 4,153,263	$ 2,991,666
Common stock repurchased (in shares)	34,827	61,078	56,001	207,132
Reissued shares during the period, shares (in shares)	53,615	30,396	97,556	43,719
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 206	$ 206	$ 206	$ 206
Ending Balance	206	206	206	206
Additional Paid-In Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	2,676,641	2,416,660	2,600,014	2,378,191
Equity-based compensation	25,159	20,087	47,436	31,755
Proceeds from Options exercised	79,808	79,581	161,724	113,822
Treasury stock issued upon Option exercise and RSU vesting	(33,921)	(18,205)	(61,487)	(25,645)
Ending Balance	2,747,687	2,498,123	2,747,687	2,498,123
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	12,117,766	10,473,939	11,773,414	10,047,839
Net income	404,027	433,314	748,379	859,414
Ending Balance	12,521,793	10,907,253	12,521,793	10,907,253
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(10,949,267)	(10,165,206)	(10,866,785)	(9,423,858)
Purchase of common stock for treasury	(201,077)	(266,915)	(311,125)	(1,015,703)
Treasury stock issued upon Option exercise and RSU vesting	33,921	18,205	61,487	25,645
Ending Balance	(11,116,423)	(10,413,916)	(11,116,423)	(10,413,916)
Deferred Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(16,710)	(16,710)	(16,710)	(16,710)
Ending Balance	(16,710)	(16,710)	(16,710)	(16,710)
Deferred Compensation Liability
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	16,710	16,710	16,710	16,710
Ending Balance	$ 16,710	$ 16,710	$ 16,710	$ 16,710