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Investment in Unconsolidated Subsidiary (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Jan. 02, 2021
USD ($)
Jan. 02, 2021
USD ($)
$ / gal
Dec. 28, 2019
USD ($)
Dec. 29, 2018
USD ($)
Dec. 30, 2017
USD ($)
Jan. 21, 2011
Schedule of Equity Method Investments [Line Items]            
Investment in the joint venture $ 804,682 $ 804,682 $ 689,354      
Gain from equity method investments   $ 3,193 428 $ (550)    
Dollars per Gallon | $ / gal   1.00        
Renewable Diesel, Percentage   0.10%        
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital   $ 207,328 69,213 67,638    
Diamond Green Diesel Holdings LLC Joint Venture [Member]            
Schedule of Equity Method Investments [Line Items]            
Equity Method Investment, Ownership Percentage           50.00%
Investment in the joint venture 772,800 772,800        
Gain from equity method investments   315,100 364,500 159,800    
Income Tax Credits and Adjustments $ 234,400 287,900 274,700 155,900 $ 160,400  
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital   $ 205,200 $ 67,500 $ 65,000    
Valero Energy Corporation [Member] | Diamond Green Diesel Holdings LLC Joint Venture [Member]            
Schedule of Equity Method Investments [Line Items]            
Equity Method Investment, Ownership Percentage           50.00%