Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Net sales	$ 6,532,204	$ 4,741,369	$ 3,571,923
Costs and expenses:
Cost of sales and operating expenses	5,002,609	3,499,385	2,688,815
Loss/(gain) on sale of assets	(4,494)	(958)	426
Selling, general and administrative expenses	436,608	391,538	378,496
Restructuring Costs and Asset Impairment Charges	29,666	778	38,167
Depreciation and amortization	394,721	316,387	350,178
Acquisition and integration costs	16,372	1,396	0
Total costs and expenses	5,875,482	4,208,526	3,456,082
Equity In net income of Diamond Green Diesel	372,346	351,627	315,095
Operating income	1,029,068	884,470	430,936
Other expense:
Interest expense	(125,566)	(62,077)	(72,686)
Foreign currency losses	(11,277)	(2,199)	(2,290)
Other expense, net	(3,609)	(4,551)	(5,534)
Total other expense	(140,452)	(68,827)	(80,510)
Equity in net income of other unconsolidated subsidiaries	5,102	5,753	3,193
Income before income taxes	893,718	821,396	353,619
Income tax expense	146,626	164,106	53,289
Net income	747,092	657,290	300,330
Net income attributable to noncontrolling interests	(9,402)	(6,376)	(3,511)
Net income attributable to Darling	$ 737,690	$ 650,914	$ 296,819
Net income per share:
Basic (in dollars per share)	$ 4.58	$ 4.01	$ 1.83
Diluted (in dollars per share)	$ 4.49	$ 3.90	$ 1.78