LONG-TERM DEBT (Net Interest Expense) (Details) - USD ($) $ in Millions	12 Months Ended
May. 31, 2015	May. 25, 2014	May. 26, 2013
Debt Disclosure [Abstract]
Long-term debt	$ 336.9	$ 393.8	$ 284.0
Short-term debt	2.8	1.5	0.6
Interest income	(1.2)	(2.3)	(2.9)
Interest capitalized	(6.6)	(13.6)	(5.5)
Net interest expense	$ 331.9	$ 379.4	$ 276.2

No definition available.

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- Definition

Amount of interest capitalized during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Aggregate amount of interest paid or due on all long-term debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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- Definition

The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The net amount of operating interest income (expense).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

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