Investment in Unconsolidated Subsidiary (Assets, Liabilities and members' equity) (Details) - USD ($) $ in Thousands	Mar. 29, 2025	Dec. 31, 2024	Dec. 28, 2024	Mar. 30, 2024	Dec. 30, 2023
ASSETS
Property, Plant and Equipment, Net	$ 2,739,079		$ 2,713,669
Other assets	203,148		199,594
Segment Assets	10,032,043		10,070,473
LIABILITIES AND STOCKHOLDERS’ EQUITY
Other non-current liabilities	207,801		208,350
Members equity	4,535,773		4,464,292	$ 4,682,990	$ 4,693,691
Liabilities and equity	10,032,043		$ 10,070,473
Diamond Green Diesel Holdings LLC Joint Venture
ASSETS
Cash	152,440	$ 353,446
Other Assets, Current	1,038,381	1,137,821
Property, Plant and Equipment, Net	3,847,613	3,868,943
Other assets	115,915	100,307
Segment Assets	5,154,349	5,460,517
LIABILITIES AND STOCKHOLDERS’ EQUITY
Revolver	0	0
Current portion of long-term debt	30,150	29,809
Other current liabilities	336,404	319,688
Long term debt	699,491	707,158
Other non-current liabilities	17,095	17,195
Members equity	4,071,209	4,386,667
Liabilities and equity	$ 5,154,349	$ 5,460,517