Income Taxes - Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 26, 2021
Deferred tax assets
Retirement, postemployment and deferred compensation plans	$ 67,797	$ 86,886
Accruals for other employee benefits, compensation, insurance and other	31,335	34,999
Net operating losses	52,522	1,018
Operating lease liabilities	18,403	19,663
Capitalized research and development costs	55,370	0
Other	32,974	31,379
Gross deferred tax assets	258,401	173,945
Valuation allowance	(4,258)	(261)
Net deferred tax assets	254,143	173,684
Deferred tax liabilities
Property, plant and equipment	44,698	38,855
Intangible assets	88,115	7,738
Operating lease right-of-use assets	15,453	16,960
Other	9,514	14,331
Gross deferred tax liabilities	157,780	77,884
Net deferred tax asset	$ 96,363	$ 95,800