Investment in Unconsolidated Subsidiary (Assets, Liabilities and members' equity) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Dec. 31, 2022	Oct. 01, 2022	Jul. 02, 2022	Apr. 02, 2022	Jan. 01, 2022
ASSETS
Assets, Current	$ 1,842,995			$ 1,638,097
Property, Plant and Equipment, Net	2,798,727			2,462,082
Other assets	238,053			136,268
Segment Assets	10,810,337			9,202,370
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	73,862			69,846
Other non-current liabilities	313,889			298,933
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,466,982	$ 4,450,563	$ 4,121,599	3,896,490	$ 3,668,814	$ 3,566,523	$ 3,495,650	$ 3,347,785
Liabilities and Equity	10,810,337			9,202,370
Diamond Green Diesel Holdings LLC Joint Venture [Member]
ASSETS
Assets, Current	1,641,934			1,304,805
Property, Plant and Equipment, Net	3,831,367			3,866,854
Other assets	94,149			61,665
Segment Assets	5,567,450			5,233,324
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	228,365			217,066
Other Liabilities, Current	391,027			515,023
Long-term Debt, Excluding Current Maturities	744,451			774,783
Other non-current liabilities	16,408			17,249
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,187,199			3,709,203
Liabilities and Equity	$ 5,567,450			$ 5,233,324