Investment in Unconsolidated Subsidiary (Revenues and Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2023	Mar. 31, 2023	Apr. 02, 2022	Mar. 31, 2022
Revenues:
Operating revenues	$ 1,791,172		$ 1,366,334
Expenses:
Cost of sales and operating expenses	1,366,973		1,020,577
Total costs and expenses	1,629,664		1,205,239
Operating income	255,845		232,899
Net income	$ 189,855		$ 190,731
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Revenues:
Operating revenues		$ 1,680,050		$ 980,692
Expenses:
Cost of sales and operating expenses		1,421,404		807,572
Depreciation, amortization and accretion expense		58,607		26,492
Total costs and expenses		1,480,011		834,064
Operating income		200,039		146,628
Other income/(expense)		2,041		(11)
Interest and debt expense, net		(13,406)		(3,009)
Net income		$ 188,674		$ 143,608