RESTRUCTURING ACTIVITIES - Schedule of Pre-Tax Expenses in Association with the Restructuring Plan (Details) - Pinnacle Integration Restructuring Plan $ in Millions	3 Months Ended	6 Months Ended
	Nov. 25, 2018 USD ($)	Nov. 25, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	$ 190.6	$ 190.6
Recognized pre-tax expenses	102.6	102.6
Corporate
Restructuring Cost and Reserve [Line Items]
Recognized pre-tax expenses	102.6
Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	190.6	190.6
Recognized pre-tax expenses	102.6	102.6
Total selling, general and administrative expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Recognized pre-tax expenses	102.6
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	112.0	112.0
Recognized pre-tax expenses	91.6	93.0
Severance and related costs | Corporate
Restructuring Cost and Reserve [Line Items]
Recognized pre-tax expenses	91.6
Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	1.9	1.9
Recognized pre-tax expenses	0.3	0.3
Accelerated depreciation | Corporate
Restructuring Cost and Reserve [Line Items]
Recognized pre-tax expenses	0.3
Contract/lease termination
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	12.0	12.0
Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	44.6	44.6
Recognized pre-tax expenses	10.6	9.1
Consulting/professional fees | Corporate
Restructuring Cost and Reserve [Line Items]
Recognized pre-tax expenses	10.6
Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Charges expected to be incurred	20.1	20.1
Recognized pre-tax expenses	0.1	$ 0.2
Other selling, general and administrative expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Recognized pre-tax expenses	$ 0.1