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, 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)
Beginning balance at Dec. 31, 2024	1,359,169	82	2,497,130	(88,333)	5,993,007	(7,042,717)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210,939				210,939
Other comprehensive income (loss)	20,484			20,484
Issuances under stock plans	9,766		5,872			3,894
Common share repurchases (including excise tax)	(152,672)					(152,672)
Stock-based compensation expense	50,168		50,168
Ending balance at Mar. 31, 2025	1,497,854	82	2,553,170	(67,849)	6,203,946	(7,191,495)
Beginning balance at Dec. 31, 2024	1,359,169	82	2,497,130	(88,333)	5,993,007	(7,042,717)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	487,079
Other comprehensive income (loss)	52,088
Ending balance at Sep. 30, 2025	556,552	82	2,640,460	(36,245)	6,480,086	(8,527,831)
Beginning balance at Mar. 31, 2025	1,497,854	82	2,553,170	(67,849)	6,203,946	(7,191,495)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	240,783				240,783
Other comprehensive income (loss)	21,234			21,234
Issuances under stock plans	7,760		6,779			981
Common share repurchases (including excise tax)	(278,032)					(278,032)
Stock-based compensation expense	43,027		43,027
Ending balance at Jun. 30, 2025	1,532,626	82	2,602,976	(46,615)	6,444,729	(7,468,546)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	35,357				35,357
Other comprehensive income (loss)	10,370			10,370
Issuances under stock plans	7,761		6,961			800
Common share repurchases (including excise tax)	(1,060,085)					(1,060,085)
Stock-based compensation expense	30,523		30,523
Ending balance at Sep. 30, 2025	$ 556,552	$ 82	$ 2,640,460	$ (36,245)	$ 6,480,086	$ (8,527,831)