CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 115,624	$ 92,093	$ 454,177	$ 332,539
Defined benefit plans reclassification including pension costs:
Actuarial gain (loss)	0	1,183	0	(303)
Prior service credits	3	3	9	9
Pension plan settlement	0	56,028	0	86,069
Postretirement benefits reclassification including benefit costs:
Actuarial gain	20	0	60	0
Unrealized gain on short-term investments	428	0	255	0
Other comprehensive income, net of tax	451	57,214	324	85,775
Comprehensive income	$ 116,075	$ 149,307	$ 454,501	$ 418,314