v3.25.2
Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 28, 2025
Jun. 29, 2024
Jun. 28, 2025
Jun. 29, 2024
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Net sales $ 1,481,518 $ 1,455,292 $ 2,862,112 $ 2,875,591
Cost of sales and operating expenses (excludes depreciation and amortization, shown separately below) 1,135,601 1,128,421 2,204,844 2,245,087
Income taxes (4,065) (774) (2,911) (4,681)
Amortization of prior service cost (2) (6) (4) (12)
Amortization of actuarial loss 207 349 456 698
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Settlements, before Tax (5,854) 0 (5,854) 0
Net income attributable to Darling 12,661 78,866 (13,499) 160,023
Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Net income attributable to Darling (652) 7,719 (12,083) 24,664
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Total before tax 5,309 10,704 (9,089) 34,213
Income taxes (1,373) (2,723) 1,783 (9,025)
Net income attributable to Darling 3,936 7,981 (7,306) 25,188
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments | Soybean Meal        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Net sales 0 0 0 33
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments | Foreign Exchange Contract        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Net sales 851 1,399 4,513 7,395
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments | Corn Option        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Cost of sales and operating expenses (excludes depreciation and amortization, shown separately below) (18) 0 (385) 0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments | Interest Rate Swap        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Foreign currency gain/(loss) 4,476 9,305 (13,217) 26,785
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Total before tax (6,059) (343) (6,306) (686)
Income taxes 1,471 81 1,529 162
Amortization of prior service cost 2 6 4 12
Amortization of actuarial loss (207) (349) (456) (698)
Net income attributable to Darling (4,588) (262) (4,777) (524)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Pension Plans        
Reclassification out of Accumulated Other Comprehensive Income [Line Items]        
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Settlements, before Tax $ (5,854) $ 0 $ (5,854) $ 0