SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Reclassifications from AOCI) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Nov. 23, 2014	Nov. 24, 2013	Nov. 23, 2014	Nov. 24, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net	$ 79.3us-gaap_InterestIncomeExpenseNet	$ 95.5us-gaap_InterestIncomeExpenseNet	$ 163.0us-gaap_InterestIncomeExpenseNet	$ 191.3us-gaap_InterestIncomeExpenseNet
Total before tax	(26.6)	(210.4)	(137.8)	(343.8)
Income tax expense (benefit)	84.0us-gaap_IncomeTaxExpenseBenefit	106.0us-gaap_IncomeTaxExpenseBenefit	126.5us-gaap_IncomeTaxExpenseBenefit	134.9us-gaap_IncomeTaxExpenseBenefit
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net of tax			(0.3)	0.1
Reclassification out of Accumulated Other Comprehensive Income \| Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net			(0.5)	0.1
Income tax expense (benefit)			0.2	0
Reclassification out of Accumulated Other Comprehensive Income \| Amortization of pension and postretirement healthcare liabilities:
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net prior service benefit	(1.0)	(0.9)	(2.1)	(1.7)
Net actuarial losses	0.8	1.7	1.7	3.3
Total before tax	(0.2)	0.8	(0.4)	1.6
Income tax expense (benefit)	0	(0.3)	0.1	(0.6)
Net of tax	$ (0.2)	$ 0.5	$ (0.3)	$ 1.0

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 19

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

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-Number 210

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-Glossary Income Tax Expense (or Benefit)

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The net amount of operating interest income (expense).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.10)

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.

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