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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

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