VARIABLE INTEREST ENTITIES (Details) $ in Millions	3 Months Ended	12 Months Ended
	Feb. 25, 2018 USD ($) building	May 27, 2018 USD ($) property	May 28, 2017 USD ($) lease_agreement	May 29, 2016 USD ($) lease building
Variable Interest Entity [Line Items]
Number of expired lease agreements | lease_agreement			1
Benefit recorded in selling, general and administrative expenses		$ (1,318.0)	$ (1,417.1)	$ (2,024.6)
Number buildings purchased in period | building	2
Loss recognized for early exit of lease contracts	$ 48.2
Loss on lease put option
Variable Interest Entity [Line Items]
Number of remaining leased buildings subject to a lease put option | property		1
Estimated amount by which put prices exceeded fair values of related properties	$ 8.2
Accrued put cost		$ 1.2
Restatement Adjustment
Variable Interest Entity [Line Items]
Benefit recorded in selling, general and administrative expenses			$ 6.7
SCAE Plan
Variable Interest Entity [Line Items]
Number of leases canceled | lease				2
Aggregate charges for early termination of leases		$ 31.5
Financing lease obligation				$ 74.2
SCAE Plan | Exchange of productive assets
Variable Interest Entity [Line Items]
Number of buildings acquired in exchange | building				2
Early termination of leases | SCAE Plan
Variable Interest Entity [Line Items]
Aggregate charges for early termination of leases				$ 55.6