Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss, Net	Accumulated Earnings	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 227,798	$ 82	$ 2,179,604	$ (101,610)	$ 3,856,826	$ (5,707,104)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	295,783				295,783
Other comprehensive income (loss)	5,700			5,700
Issuances under stock plans	7,379		(2,141)			9,520
Common share repurchases (including excise tax)	(108,850)					(108,850)
Stock-based compensation expense	45,048		45,048
Ending balance at Mar. 31, 2023	472,858	82	2,222,511	(95,910)	4,152,609	(5,806,434)
Beginning balance at Dec. 31, 2022	227,798	82	2,179,604	(101,610)	3,856,826	(5,707,104)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	673,835
Other comprehensive income (loss)	7,052
Ending balance at Sep. 30, 2023	566,638	82	2,291,013	(94,558)	4,530,661	(6,160,560)
Beginning balance at Mar. 31, 2023	472,858	82	2,222,511	(95,910)	4,152,609	(5,806,434)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	198,043				198,043
Other comprehensive income (loss)	10,783			10,783
Issuances under stock plans	5,899		4,313			1,586
Common share repurchases (including excise tax)	(133,310)					(133,310)
Stock-based compensation expense	32,233		32,233
Ending balance at Jun. 30, 2023	586,506	82	2,259,057	(85,127)	4,350,652	(5,938,158)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	180,009				180,009
Other comprehensive income (loss)	(9,431)			(9,431)
Issuances under stock plans	5,893		4,914			979
Common share repurchases (including excise tax)	(223,381)					(223,381)
Stock-based compensation expense	27,042		27,042
Ending balance at Sep. 30, 2023	566,638	82	2,291,013	(94,558)	4,530,661	(6,160,560)
Beginning balance at Dec. 31, 2023	680,634	82	2,320,289	(76,331)	4,739,292	(6,302,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210,545				210,545
Other comprehensive income (loss)	(6,055)			(6,055)
Issuances under stock plans	8,072		2,712			5,360
Common share repurchases (including excise tax)	(225,522)					(225,522)
Stock-based compensation expense	50,500		50,500
Ending balance at Mar. 31, 2024	718,174	82	2,373,501	(82,386)	4,949,837	(6,522,860)
Beginning balance at Dec. 31, 2023	680,634	82	2,320,289	(76,331)	4,739,292	(6,302,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	855,142
Other comprehensive income (loss)	20,698
Ending balance at Sep. 30, 2024	1,064,682	82	2,460,664	(55,633)	5,594,434	(6,934,865)
Beginning balance at Mar. 31, 2024	718,174	82	2,373,501	(82,386)	4,949,837	(6,522,860)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	229,548				229,548
Other comprehensive income (loss)	733			733
Issuances under stock plans	6,426		8,587			(2,161)
Common share repurchases (including excise tax)	(347,969)					(347,969)
Stock-based compensation expense	39,747		39,747
Ending balance at Jun. 30, 2024	646,659	82	2,421,835	(81,653)	5,179,385	(6,872,990)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	415,049				415,049
Other comprehensive income (loss)	26,020			26,020
Issuances under stock plans	6,355		4,486			1,869
Common share repurchases (including excise tax)	(63,744)					(63,744)
Stock-based compensation expense	34,343		34,343
Ending balance at Sep. 30, 2024	$ 1,064,682	$ 82	$ 2,460,664	$ (55,633)	$ 5,594,434	$ (6,934,865)