CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury stock	Total
Balance at Dec. 31, 2020	$ 3,193	$ 4,537,982	$ 6,432,074	$ 3,034	$ (5,815,423)	$ 5,160,860
Balance (in shares) at Dec. 31, 2020	638,662				(110,565)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		17,949				17,949
Exercise of stock options	$ 3	6,758				6,761
Exercise of stock options (in shares)	492
Unrealized gain (loss), net on available-for-sale securities				24		24
Repurchase of common stock					$ (13,419)	(13,419)
Repurchase of common stock (in shares)					(150)
Foreign currency translation				(27,932)		(27,932)
Net income			315,194			315,194
Balance at Mar. 31, 2021	$ 3,196	4,562,689	6,747,268	(24,874)	$ (5,828,842)	5,459,437
Balance (in shares) at Mar. 31, 2021	639,154				(110,715)
Balance at Dec. 31, 2020	$ 3,193	4,537,982	6,432,074	3,034	$ (5,815,423)	5,160,860
Balance (in shares) at Dec. 31, 2020	638,662				(110,565)
Increase (Decrease) in Stockholders' Equity
Unrealized gain (loss), net on available-for-sale securities						(117)
Net income						1,056,161
Balance at Sep. 30, 2021	$ 3,199	4,626,299	7,488,235	(43,495)	$ (5,829,241)	6,244,997
Balance (in shares) at Sep. 30, 2021	639,851				(110,719)
Balance at Mar. 31, 2021	$ 3,196	4,562,689	6,747,268	(24,874)	$ (5,828,842)	5,459,437
Balance (in shares) at Mar. 31, 2021	639,154				(110,715)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		16,921				16,921
Exercise of stock options	$ 2	17,723				17,725
Exercise of stock options (in shares)	422
Unrealized gain (loss), net on available-for-sale securities				(183)		(183)
Repurchase of common stock					$ (399)	(399)
Repurchase of common stock (in shares)					(4)
Foreign currency translation				8,235		8,235
Net income			403,762			403,762
Balance at Jun. 30, 2021	$ 3,198	4,597,333	7,151,030	(16,822)	$ (5,829,241)	5,905,498
Balance (in shares) at Jun. 30, 2021	639,576				(110,719)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		16,293				16,293
Exercise of stock options	$ 1	12,673				12,674
Exercise of stock options (in shares)	275
Unrealized gain (loss), net on available-for-sale securities				43		43
Foreign currency translation				(26,716)		(26,716)
Net income			337,205			337,205
Balance at Sep. 30, 2021	$ 3,199	4,626,299	7,488,235	(43,495)	$ (5,829,241)	6,244,997
Balance (in shares) at Sep. 30, 2021	639,851				(110,719)
Balance at Dec. 31, 2021	$ 3,200	4,652,620	7,809,549	(69,165)	$ (5,829,253)	6,566,951
Balance (in shares) at Dec. 31, 2021	640,043				(110,720)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		16,175				16,175
Exercise of stock options	$ 3	4,507				4,510
Exercise of stock options (in shares)	485
Unrealized gain (loss), net on available-for-sale securities				(4,059)		(4,059)
Repurchase of common stock					$ (12,187)	(12,187)
Repurchase of common stock (in shares)					(166)
Foreign currency translation				1,079		1,079
Net income			294,203			294,203
Balance at Mar. 31, 2022	$ 3,203	4,673,302	8,103,752	(72,145)	$ (5,841,440)	6,866,672
Balance (in shares) at Mar. 31, 2022	640,528				(110,886)
Balance at Dec. 31, 2021	$ 3,200	4,652,620	7,809,549	(69,165)	$ (5,829,253)	$ 6,566,951
Balance (in shares) at Dec. 31, 2021	640,043				(110,720)
Increase (Decrease) in Stockholders' Equity
Exercise of stock options (in shares)						813
Unrealized gain (loss), net on available-for-sale securities						$ (7,840)
Net income						889,950
Balance at Sep. 30, 2022	$ 3,206	4,736,141	8,699,499	(224,455)	$ (6,398,631)	6,815,760
Balance (in shares) at Sep. 30, 2022	641,245				(117,280)
Balance at Mar. 31, 2022	$ 3,203	4,673,302	8,103,752	(72,145)	$ (5,841,440)	6,866,672
Balance (in shares) at Mar. 31, 2022	640,528				(110,886)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		16,157				16,157
Exercise of stock options	$ 2	18,110				18,112
Exercise of stock options (in shares)	416
Unrealized gain (loss), net on available-for-sale securities				(1,106)		(1,106)
Repurchase of common stock					$ (284,311)	(284,311)
Repurchase of common stock (in shares)					(3,286)
Foreign currency translation				(79,707)		(79,707)
Net income			273,360			273,360
Balance at Jun. 30, 2022	$ 3,205	4,707,569	8,377,112	(152,958)	$ (6,125,751)	6,809,177
Balance (in shares) at Jun. 30, 2022	640,944				(114,172)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		16,436				16,436
Exercise of stock options	$ 1	12,136				12,137
Exercise of stock options (in shares)	301
Unrealized gain (loss), net on available-for-sale securities				(2,675)		(2,675)
Repurchase of common stock					$ (272,880)	(272,880)
Repurchase of common stock (in shares)					(3,108)
Foreign currency translation				(68,822)		(68,822)
Net income			322,387			322,387
Balance at Sep. 30, 2022	$ 3,206	$ 4,736,141	$ 8,699,499	$ (224,455)	$ (6,398,631)	$ 6,815,760
Balance (in shares) at Sep. 30, 2022	641,245				(117,280)