Stockholders' Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2021	Dec. 27, 2020	Dec. 29, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other components of net periodic benefit costs	$ (10,478)	$ (89,154)	$ (7,302)
Total reclassification, before tax	290,501	115,432	164,460
Income tax expense	70,530	14,595	24,494
Total reclassification, net of tax	219,971	$ 100,837	$ 139,966
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassification, before tax	25,919
Income tax expense	6,964
Total reclassification, net of tax	18,955
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 costs	(4,988)
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 costs	30,907
Reclassification out of Accumulated Other Comprehensive Income | Pension settlement charge
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other components of net periodic benefit costs	$ 0