Related Party Transactions	3 Months Ended
Mar. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Raw Material Agreement The Company entered into a Raw Material Agreement with the DGD Joint Venture in May 2011 pursuant to which the Company will offer to supply certain animal fats and used cooking oil at market prices, up to the DGD Joint Venture's full operational requirement of feedstock, but the DGD Joint Venture is not obligated to purchase the raw material offered by the Company. Additionally, the Company may offer other feedstocks to the DGD Joint Venture, such as inedible corn oil, purchased on a resale basis. For the three months ended March 30, 2019 and March 31, 2018, the Company has recorded sales to the DGD Joint Venture of approximately $51.2 million and $33.1 million, respectively. At March 30, 2019 and December 29, 2018, the Company has $6.7 million and $8.0 million in outstanding receivables due from the DGD Joint Venture, respectively. In addition, the Company has eliminated approximately $5.9 million of additional sales for the three months ended March 30, 2019 to defer the Company's portion of profit of approximately $1.0 million on those sales relating to inventory assets remaining on the DGD Joint Venture's balance sheet at March 30, 2019. Revolving Loan Agreement On May 1, 2019, Darling through its wholly owned subsidiary Darling Green Energy LLC, (“Darling Green”), and Diamond Alternative Energy, LLC, a wholly owned subsidiary of Valero (“Diamond Alternative” and together with Darling Green, the “DGD Lenders”), entered into a revolving loan agreement (the “DGD Loan Agreement”) with the DGD Joint Venture. The DGD Lenders have committed to making loans available to the DGD Joint Venture in the total amount of $50.0 million with each lender committed to $25.0 million of the total commitment. Any borrowings by the DGD Joint Venture under the DGD Loan Agreement are at the applicable annum rate equal to the sum of (a) the LIBO Rate (meaning Reuters BBA Libor Rates Page 3750) on such day plus (b) 2.50%. The DGD Loan Agreement matures on April 29, 2020, unless extended by agreement of the parties. The DGD Loan Agreement replaces a similar agreement with lower commitment levels that expired on December 31, 2018. As of March 30, 2019, no amounts are owed to Darling Green under the DGD Loan Agreement.

Related Party Transactions

Raw Material Agreement

The Company entered into a Raw Material Agreement with the DGD Joint Venture in May 2011 pursuant to which the Company will offer to supply certain animal fats and used cooking oil at market prices, up to the DGD Joint Venture's full operational requirement of feedstock, but the DGD Joint Venture is not obligated to purchase the raw material offered by the Company. Additionally, the Company may offer other feedstocks to the DGD Joint Venture, such as inedible corn oil, purchased on a resale basis. For the three months ended March 30, 2019 and March 31, 2018, the Company has recorded sales to the DGD Joint Venture of approximately $51.2 million and $33.1 million, respectively. At March 30, 2019 and December 29, 2018, the Company has $6.7 million and $8.0 million in outstanding receivables due from the DGD Joint Venture, respectively. In addition, the Company has eliminated approximately $5.9 million of additional sales for the three months ended March 30, 2019 to defer the Company's portion of profit of approximately $1.0 million on those sales relating to inventory assets remaining on the DGD Joint Venture's balance sheet at March 30, 2019.

Revolving Loan Agreement

On May 1, 2019, Darling through its wholly owned subsidiary Darling Green Energy LLC, (“Darling Green”), and Diamond Alternative Energy, LLC, a wholly owned subsidiary of Valero (“Diamond Alternative” and together with Darling Green, the “DGD Lenders”), entered into a revolving loan agreement (the “DGD Loan Agreement”) with the DGD Joint Venture. The DGD Lenders have committed to making loans available to the DGD Joint Venture in the total amount of $50.0 million with each lender committed to $25.0 million of the total commitment. Any borrowings by the DGD Joint Venture under the DGD Loan Agreement are at the applicable annum rate equal to the sum of (a) the LIBO Rate (meaning Reuters BBA Libor Rates Page 3750) on such day plus (b) 2.50%. The DGD Loan Agreement matures on April 29, 2020, unless extended by agreement of the parties. The DGD Loan Agreement replaces a similar agreement with lower commitment levels that expired on December 31, 2018. As of March 30, 2019, no amounts are owed to Darling Green under the DGD Loan Agreement.