CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 172,812	$ 122,319	$ 338,553	$ 240,446
Defined benefit plans reclassification including pension costs:
Actuarial loss	0	(2,221)	0	(1,486)
Prior service credits	3	3	6	6
Pension plan settlement	0	30,041	0	30,041
Postretirement benefits reclassification including benefit costs:
Actuarial gain	20	0	40	0
Unrealized gain (loss) on short-term investments	3	0	(173)	0
Other comprehensive income (loss), net of tax	26	27,823	(127)	28,561
Comprehensive income	$ 172,838	$ 150,142	$ 338,426	$ 269,007