BUSINESS SEGMENTS AND RELATED INFORMATION - Segment Reporting Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 23, 2025	Nov. 24, 2024	Nov. 23, 2025	Nov. 24, 2024
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	$ 2,979.1	$ 3,195.1	$ 5,611.7	$ 5,990.0
Segment cost of goods sold	2,283.1	2,348.4	4,275.1	4,404.0
Segment SG&A expenses	325.1	425.2	660.7	760.6
Operating profit (loss)	(597.6)	402.6	(250.2)	804.2
Other intangible asset impairment charges	197.0	18.9	197.0	18.9
Goodwill impairment charges	771.3	0.0	771.3
Loss (gain) on divestitures	0.2		(42.2)	2.3
Other charges, net	(7.2)	77.6	(3.9)	64.8
Pension and postretirement non-service income	6.1	3.1	12.2	6.2
Interest expense, net	96.0	108.2	189.8	214.0
Equity method investment earnings	32.2	48.5	61.6	77.6
Income (loss) before income taxes	(655.3)	346.0	(366.2)	674.0
Operating Segments
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	2,979.1	3,195.1	5,611.7	5,990.0
Segment cost of goods sold	2,281.2	2,353.1	4,270.3	4,422.3
Segment SG&A expenses	275.8	273.0	518.7	515.4
Operating profit (loss)	422.1	569.0	822.7	1,052.3
Corporate, Non-Segment
BUSINESS SEGMENTS AND RELATED INFORMATION
General corporate expenses	58.4	69.9	150.7	162.1
Grocery & Snacks
BUSINESS SEGMENTS AND RELATED INFORMATION
Other intangible asset impairment charges	1.7	0.7
Grocery & Snacks | Operating Segments
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	1,209.1	1,321.0	2,288.7	2,503.7
Segment cost of goods sold	863.5	906.6	1,616.4	1,734.8
Segment SG&A expenses	114.4	118.7	220.3	219.9
Operating profit (loss)	231.2	295.7	452.0	549.0
Refrigerated & Frozen
BUSINESS SEGMENTS AND RELATED INFORMATION
Other intangible asset impairment charges	195.3	18.2
Goodwill impairment charges	771.3		771.3
Refrigerated & Frozen | Operating Segments
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	1,251.2	1,338.5	2,327.4	2,424.9
Segment cost of goods sold	1,011.3	1,034.8	1,878.2	1,869.5
Segment SG&A expenses	112.4	105.6	207.3	198.2
Operating profit (loss)	127.5	198.1	241.9	357.2
International | Operating Segments
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	230.4	243.4	442.7	502.5
Segment cost of goods sold	170.1	175.3	321.5	368.1
Segment SG&A expenses	28.2	28.7	51.4	59.2
Operating profit (loss)	32.1	39.4	69.8	75.2
Food service | Operating Segments
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	288.4	292.2	552.9	558.9
Segment cost of goods sold	236.3	236.4	454.2	449.9
Segment SG&A expenses	20.8	20.0	39.7	38.1
Operating profit (loss)	31.3	35.8	59.0	70.9
Frozen
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	1,055.2	1,140.2	1,953.7	2,053.6
Other Shelf-stable
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	625.2	751.0	1,193.7	1,441.3
Refrigerated
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	196.0	198.3	373.7	371.3
Snacks
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	583.9	570.0	1,095.0	1,062.4
International
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	230.4	243.4	442.7	502.5
Food service
BUSINESS SEGMENTS AND RELATED INFORMATION
Net sales	$ 288.4	$ 292.2	$ 552.9	$ 558.9