Investment in Unconsolidated Subsidiary (Revenues and Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 29, 2024	Mar. 30, 2024	Jul. 01, 2023	Apr. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Revenues:
Operating revenues	$ 1,455,292		$ 1,757,621		$ 2,875,591	$ 3,548,793
Expenses:
Cost of sales and operating expenses	1,128,421		1,359,702		2,245,087	2,726,675
Total costs and expenses	1,350,987		1,613,901		2,712,536	3,243,565
Operating income	148,502		356,684		285,671	612,529
Income before income taxes	82,139		295,909		167,634	512,738
Income tax expense	774		40,712		4,681	67,686
Net income	81,365	$ 81,588	255,197	$ 189,855	162,953	445,052
Diamond Green Diesel Holdings LLC Joint Venture
Revenues:
Operating revenues	1,184,076		2,246,111		2,595,191	3,926,161
Expenses:
Cost of sales and operating expenses	1,014,927		1,751,315		2,174,283	3,172,719
Lower of cost or market (LCM) inventory valuation adjustment	15,866		0		37,504	0
Depreciation, amortization and accretion expense	61,910		58,315		127,200	116,922
Total costs and expenses	1,092,703		1,809,630		2,338,987	3,289,641
Operating income	91,373		436,481		256,204	636,520
Other income	6,058		2,121		9,278	4,162
Interest and debt expense, net	(9,037)		(12,674)		(20,279)	(26,080)
Income before income taxes	88,394		425,928		245,203	614,602
Income tax expense	0		0		(29)	0
Net income	$ 88,394		$ 425,928		$ 245,232	$ 614,602