Income Taxes - Schedule of Provision for Income Taxes with Income Tax at Federal Statutory Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income before income taxes	$ 2,488,567	$ 3,928,947	$ 5,068,413
Expected income tax provision based on U.S. federal statutory tax rate	522,599	825,079	1,064,367
State and local income taxes, net of federal benefit	62,675	98,257	126,932
Tax benefit (deficiency) from stock-based compensation	0	0	(5,282)
Tax credits for increasing research activities	(96,680)	(70,412)	(151,913)
Other, net	(16,745)	(25,294)	(13,300)
Provision for income taxes	$ 471,849	$ 827,630	$ 1,020,804
Federal statutory income tax rate	21.00%	21.00%	21.00%
Effective tax rate	19.00%	21.10%	20.10%