SEGMENT INFORMATION - SCHEDULE OF NET SALES AND EARNINGS BY SEGMENT (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2026	Mar. 30, 2025
Segment Reporting Information [Line Items]
Net sales	$ 3,104,167	$ 2,805,419
Cost of sales	1,881,436	1,861,152
Selling, marketing and administrative expense	576,040	558,672
Operating profit	$ 640,693	$ 369,221
Unallocated mark-to-market losses on commodity derivatives, extensible enumeration, not disclosed	Unallocated mark-to-market losses on commodity derivatives	Unallocated mark-to-market losses on commodity derivatives
Restructuring and related cost	$ 13,358	$ 25,854
Interest expense, net	49,818	44,622
Other (income) expense, net	(1,820)	945
Income before income taxes	592,695	323,654
Operating Segments
Segment Reporting Information [Line Items]
Operating profit	841,941	766,953
Operating Segments | North America Confectionery
Segment Reporting Information [Line Items]
Net sales	2,489,918	2,300,140
Cost of sales	1,402,465	1,315,076
Selling, marketing and administrative expense	295,075	288,690
Operating profit	792,378	696,374
Operating Segments | North America Salty Snacks
Segment Reporting Information [Line Items]
Net sales	350,070	277,798
Cost of sales	248,517	180,638
Selling, marketing and administrative expense	67,253	55,307
Operating profit	34,300	41,853
Operating Segments | International
Segment Reporting Information [Line Items]
Net sales	264,179	227,481
Cost of sales	200,270	153,984
Selling, marketing and administrative expense	48,646	44,771
Operating profit	15,263	28,726
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Unallocated corporate expense	157,706	160,425
Segment Reconciling Items
Segment Reporting Information [Line Items]
Unallocated mark-to-market (gains) losses on commodity derivatives	30,184	211,453
Restructuring and related cost	$ 13,358	$ 25,854