Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 247,643	$ 241,804
Other comprehensive income (loss), net of tax effects:
Foreign currency translation adjustments	(12,630)	3,955
Changes in defined benefit plan liabilities	(21)	263
Unrealized gains (losses) on investments	(392)	30
Total other comprehensive income (loss), net of tax effects	(13,043)	4,248
Comprehensive income	$ 234,600	$ 246,052