RESTRUCTURING ACTIVITIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		31 Months Ended	33 Months Ended
	Aug. 29, 2021	Aug. 30, 2020	Aug. 29, 2021	Aug. 29, 2021
Pinnacle Integration Restructuring Plan
Restructuring Cost And Reserve [Line Items]
Charges expected to be incurred	$ 357.0		$ 357.0	$ 357.0
Cash charges incurred or expected to be incurred	283.2		283.2	283.2
Non-cash charges incurred or expected to be incurred	73.8		73.8	73.8
Recognized charges	7.3	$ 8.6		281.0
Charges that have resulted or will result in cash outflows				248.2
Non-cash charges				32.8
Conagra Restructuring Plan
Restructuring Cost And Reserve [Line Items]
Charges expected to be incurred	144.7		144.7	144.7
Cash charges incurred or expected to be incurred	36.0		36.0	36.0
Non-cash charges incurred or expected to be incurred	108.7		108.7	108.7
Recognized charges	8.5	$ 17.3	121.3
Charges that have resulted or will result in cash outflows			26.5
Non-cash charges			94.8
Charges approved for incurrence	172.6		172.6	172.6
Cash charges approved for incurrence	45.8		45.8	45.8
Non-cash charges approved for incurrence	126.8		$ 126.8	$ 126.8
Charges that have resulted or will result in cash outflows	2.4
Non-cash charges	$ 6.1