Investment in Unconsolidated Subsidiary (Revenues and Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2022	Mar. 31, 2022	Apr. 03, 2021	Mar. 31, 2021
Revenues:
Operating revenues	$ 1,366,334		$ 1,046,716
Expenses:
Cost of sales and operating expenses	1,020,577		772,784
Total costs and expenses	1,205,239		949,430
Operating income	232,899		199,511
Other expense, net	(742)		(1,159)
Net income	$ 190,731		$ 153,418
Diamond Green Diesel Holdings LLC Joint Venture [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Revenues:
Operating revenues		$ 980,692		$ 431,633
Expenses:
Cost of sales and operating expenses		807,572		215,234
Depreciation, amortization and accretion expense		26,492		11,687
Total costs and expenses		834,064		226,921
Operating income		146,628		204,712
Other expense, net		(11)		58
Interest and debt expense, net		(3,009)		(320)
Net income		$ 143,608		$ 204,450