Condensed Consolidated Statements of Changes in Stockholders' (Deficit) 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, 2020	$ 1,090,428	$ 82	$ 1,968,930	$ (99,228)	$ 2,255,467	$ (3,034,823)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	164,100				164,100
Other comprehensive income (loss)	6,050			6,050
Issuances under stock plans	5,380		(1,543)			6,923
Common share repurchases	(410,450)					(410,450)
Stock-based compensation expense	36,086		36,086
Ending balance at Mar. 31, 2021	891,594	82	2,003,473	(93,178)	2,419,567	(3,438,350)
Beginning balance at Dec. 31, 2020	1,090,428	82	1,968,930	(99,228)	2,255,467	(3,034,823)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	435,336
Other comprehensive income (loss)	16,250
Ending balance at Jun. 30, 2021	527,638	82	2,031,726	(82,978)	2,690,803	(4,111,995)
Beginning balance at Mar. 31, 2021	891,594	82	2,003,473	(93,178)	2,419,567	(3,438,350)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	271,236				271,236
Other comprehensive income (loss)	10,200			10,200
Issuances under stock plans	4,080		2,063			2,017
Common share repurchases	(675,662)					(675,662)
Stock-based compensation expense	26,190		26,190
Ending balance at Jun. 30, 2021	527,638	82	2,031,726	(82,978)	2,690,803	(4,111,995)
Beginning balance at Dec. 31, 2021	371,058	82	2,074,896	(81,431)	3,049,027	(4,671,516)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	172,515				172,515
Other comprehensive income (loss)	(1,380)			(1,380)
Issuances under stock plans	6,964		579			6,385
Common share repurchases	(463,125)					(463,125)
Stock-based compensation expense	32,121		32,121
Ending balance at Mar. 31, 2022	118,153	82	2,107,596	(82,811)	3,221,542	(5,128,256)
Beginning balance at Dec. 31, 2021	371,058	82	2,074,896	(81,431)	3,049,027	(4,671,516)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	377,440
Other comprehensive income (loss)	(23,085)
Ending balance at Jun. 30, 2022	(142,867)	82	2,136,684	(104,516)	3,426,467	(5,601,584)
Beginning balance at Mar. 31, 2022	118,153	82	2,107,596	(82,811)	3,221,542	(5,128,256)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	204,925				204,925
Other comprehensive income (loss)	(21,705)			(21,705)
Issuances under stock plans	5,061		4,634			427
Common share repurchases	(473,755)					(473,755)
Stock-based compensation expense	24,454		24,454
Ending balance at Jun. 30, 2022	$ (142,867)	$ 82	$ 2,136,684	$ (104,516)	$ 3,426,467	$ (5,601,584)