PENSION AND POSTRETIREMENT BENEFITS - Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
Nov. 25, 2018 USD ($)	Nov. 25, 2018 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net liability related to pension and postretirement plans	$ 35.1	$ 35.1
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Weighted average discount rate for service costs		4.21%
Weighted average discount rate for interest costs		3.83%
Employer contributions to pension and other postretirement plans	3.7	$ 7.9
Anticipated further contributions for the remainder of fiscal 2018	6.6	6.6
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Employer contributions to pension and other postretirement plans	1.7	4.3
Anticipated further contributions for the remainder of fiscal 2018	$ 11.9	$ 11.9

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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