Changes in Accumulated Other Comprehensive Income (loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 2,525,897	$ 2,451,294	$ 2,562,444
Other comprehensive income (loss)	(54,242)	22,890	(43,920)
Balance	2,819,294	2,525,897	2,451,294
Foreign Currency Translation Reclassification Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(22,442)	(39,849)
Other comprehensive (loss) gain before reclassifications, net of tax	(52,847)	17,407
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0	0
Other comprehensive income (loss)	(52,847)	17,407
Balance	(75,289)	(22,442)	(39,849)
Unrealized Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(6,194)	(8,661)
Other comprehensive (loss) gain before reclassifications, net of tax	(1,699)	2,423
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	86	44
Other comprehensive income (loss)	(1,613)	2,467
Balance	(7,807)	(6,194)	(8,661)
Unrealized (Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	506	(2,517)
Other comprehensive (loss) gain before reclassifications, net of tax	2,100	5,464
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(1,875)	(2,441)
Other comprehensive income (loss)	225	3,023
Balance	731	506	(2,517)
Retirement Plans Prior Service Credit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	1,152	1,159
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	1,145	1,152	1,159
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(26,978)	(49,868)	(5,948)
Other comprehensive (loss) gain before reclassifications, net of tax	(52,446)	25,294
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(1,796)	(2,404)	294
Other comprehensive income (loss)	(54,242)	22,890	(43,920)
Balance	$ (81,220)	$ (26,978)	$ (49,868)