Shareholders' Equity - Summary of Changes in Shareholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 4,364,725	$ 3,506,849
Net income	394,269	344,352
Purchase of common stock for treasury	(498,776)	(110,048)
Equity-based compensation	17,141	22,277
Proceeds from Options exercised	67,022	81,916
Ending Balance	4,344,381	3,845,346
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	4,344,381	3,845,346
Treasury Stock, Value, Acquired, Cost Method	498,776	110,048
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	206	206
Ending Balance	206	206
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	206	206
Additional Paid-In Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	2,848,528	2,600,014
Equity-based compensation	17,141	22,277
Proceeds from Options exercised	67,022	81,916
Treasury stock issued upon Option exercise and RSU vesting	(26,984)	(27,566)
Ending Balance	2,905,707	2,676,641
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	2,905,707	2,676,641
Treasury stock issued upon Option exercise and RSU vesting	(26,984)	(27,566)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	13,365,025	11,773,414
Net income	394,269	344,352
Ending Balance	13,759,294	12,117,766
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	13,759,294	12,117,766
Treasury Stock, Common
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(11,849,034)	(10,866,785)
Purchase of common stock for treasury	(498,776)	(110,048)
Treasury stock issued upon Option exercise and RSU vesting	26,984	27,566
Ending Balance	(12,320,826)	(10,949,267)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	(12,320,826)	(10,949,267)
Treasury Stock, Value, Acquired, Cost Method	498,776	110,048
Treasury stock issued upon Option exercise and RSU vesting	26,984	27,566
Deferred Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(16,710)	(16,710)
Ending Balance	(16,710)	(16,710)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	(16,710)	(16,710)
Deferred Compensation Liability
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	16,710	16,710
Ending Balance	16,710	16,710
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stockholders' Equity Attributable to Parent	$ 16,710	$ 16,710