Darling's total contributions for constructing and funding Joint Venture

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- Definition

Dollars per Gallon

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Line of Credit Facility, Term

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- Definition

Production, Barrels Per Day

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- Definition

Renewable Diesel, Percentage

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Investment in Unconsolidated Subsidiary (Details) (USD $)	3 Months Ended	12 Months Ended			7 Months Ended	12 Months Ended
	Jan. 03, 2015	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Jan. 21, 2011
Schedule of Equity Method Investments [Line Items]
Processing Capability, Barrels of Input Feedstock Per Day		11,000dar_ProductionBarrelsPerDay
Investment in the joint venture	$ 202,712,000us-gaap_EquityMethodInvestments	$ 202,712,000us-gaap_EquityMethodInvestments	$ 115,114,000us-gaap_EquityMethodInvestments
Loss from equity method investments		(65,609,000)	(7,660,000)	2,662,000
Dollars per Gallon		1.00dar_DollarsperGallon
Renewable Diesel, Percentage		0.10%dar_RenewableDieselPercentage
Income Tax Credits and Adjustments	67,400,000us-gaap_IncomeTaxCreditsAndAdjustments
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage								50.00%
Line of Credit Facility, Term					14 years
Term loan facility	221,300,000	221,300,000
Darling's total contributions for constructing and funding Joint Venture	111,700,000	111,700,000
Investment in the joint venture	178,900,000	178,900,000
Loss from equity method investments		(63,800,000)	(7,700,000)	2,700,000
Income Tax Credits and Adjustments						$ 126,000,000	$ 50,400,000
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%