Changes in Accumulated Other Comprehensive Income (loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 2,451,294	$ 2,562,444	$ 2,207,018
Other comprehensive income (loss)	22,890	(43,920)	(39,464)
Balance	2,525,897	2,451,294	2,562,444
Foreign Currency Translation Reclassification Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(39,849)	(10,818)
Other comprehensive (loss) gain before reclassifications, net of tax	17,407	(29,031)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0	0
Other comprehensive income (loss)	17,407	(29,031)
Balance	(22,442)	(39,849)	(10,818)
Unrealized Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(8,661)	3,704
Other comprehensive (loss) gain before reclassifications, net of tax	2,423	(12,666)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	44	301
Other comprehensive income (loss)	2,467	(12,365)
Balance	(6,194)	(8,661)	3,704
Unrealized (Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,517)	0
Other comprehensive (loss) gain before reclassifications, net of tax	5,464	(2,517)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(2,441)	0
Other comprehensive income (loss)	3,023	(2,517)
Balance	506	(2,517)	0
Amortization of Prior Service Credit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	1,159	1,166
Other comprehensive (loss) gain before reclassifications, net of tax	0	0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(7)	(7)	(7)
Other comprehensive income (loss)	(7)	(7)
Balance	1,152	1,159	1,166
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(49,868)	(5,948)	33,516
Other comprehensive (loss) gain before reclassifications, net of tax	25,294	(44,214)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(2,404)	294	(1,002)
Other comprehensive income (loss)	22,890	(43,920)	(39,464)
Balance	$ (26,978)	$ (49,868)	$ (5,948)