RESTRUCTURING ACTIVITIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 27, 2017	Aug. 28, 2016	Feb. 28, 2016
Discontinued operations, disposed of by sale | Private Brands
Restructuring Cost and Reserve [Line Items]
Charges that have resulted or will result in cash outflows from plan inception			$ 84.5
Non-cash charges from plan inception			45.7
Pre-tax expenses from plan inception			$ 130.2
Discontinued operations, spinoff | Lamb Weston
Restructuring Cost and Reserve [Line Items]
Charges that have resulted or will result in cash outflows from plan inception	$ 2.1
SCAE Plan
Restructuring Cost and Reserve [Line Items]
Approved expenses (up to) in connection with the SCAE Plan	900.9
Charges incurred or expected to be incurred	450.1
Cash charges incurred or expected to be incurred	303.3
Non-cash charges incurred or expected to be incurred	146.8
Recognized charges	11.4	$ 14.1
Charges that have resulted or will result in cash outflows	4.8
Non-cash charges	6.6
Charges that have resulted or will result in cash outflows from plan inception	290.3
Non-cash charges from plan inception	$ 143.4