Stockholders' Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 26, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other components of net periodic benefit (income)/costs	$ (2,737)	$ 6,659	$ 10,478
Total reclassification, before tax	(302,588)	(235,999)	(290,501)
Income tax expense	(69,836)	(62,094)	(70,530)
Total reclassification, net of tax	(232,752)	$ (173,905)	$ (219,971)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassification, before tax	6,276
Income tax expense	1,660
Total reclassification, net of tax	4,616
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other components of net periodic benefit (income)/costs	(1,895)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other components of net periodic benefit (income)/costs	$ 8,171