RESTRUCTURING ACTIVITIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		19 Months Ended	21 Months Ended
	Aug. 30, 2020	Aug. 25, 2019	Aug. 30, 2020	Aug. 30, 2020
Pinnacle Integration Restructuring Plan
Restructuring Cost And Reserve [Line Items]
Charges expected to be incurred	$ 362.3		$ 362.3	$ 362.3
Cash charges incurred or expected to be incurred	278.9		278.9	278.9
Non-cash charges incurred or expected to be incurred	83.4		83.4	83.4
Recognized charges	8.6	$ 27.7		250.6
Charges that have resulted or will result in cash outflows	8.3
Non-cash charges	0.3
Charges that have resulted or will result in cash outflows				220.7
Non-cash charges				29.9
Conagra Restructuring Plan
Restructuring Cost And Reserve [Line Items]
Charges expected to be incurred	161.5		161.5	161.5
Cash charges incurred or expected to be incurred	38.9		38.9	38.9
Non-cash charges incurred or expected to be incurred	122.6		122.6	122.6
Recognized charges	17.3	$ 21.1	83.9
Charges that have resulted or will result in cash outflows	5.0
Non-cash charges	12.3
Charges that have resulted or will result in cash outflows			17.8
Non-cash charges			66.1
Charges approved for incurrence	170.6		170.6	170.6
Cash charges approved for incurrence	43.8		43.8	43.8
Non-cash charges approved for incurrence	$ 126.8		$ 126.8	$ 126.8