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VARIABLE INTEREST ENTITIES (Reflected in Condensed Consolidated Balance Sheets) (Details) - Variable interest entities - USD ($) $ in Millions | Feb. 28, 2016 | May. 31, 2015
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Assets | $ 80.8 | $ 93.5
Liabilities | 70.8 | 49.5
Cash and cash equivalents |  |
Variable Interest Entity [Line Items] |  |
Assets | 2.1 | 13.7
Receivables, less allowance for doubtful accounts |  |
Variable Interest Entity [Line Items] |  |
Assets | 0.1 | 0.2
Inventories |  |
Variable Interest Entity [Line Items] |  |
Assets | 1.7 | 1.3
Prepaid expenses and other current assets |  |
Variable Interest Entity [Line Items] |  |
Assets | 0.4 | 0.3
Property, plant and equipment, net |  |
Variable Interest Entity [Line Items] |  |
Assets | 52.3 | 53.2
Goodwill |  |
Variable Interest Entity [Line Items] |  |
Assets | 18.8 | 18.8
Brands, trademarks and other intangibles, net |  |
Variable Interest Entity [Line Items] |  |
Assets | 5.4 | 6.0
Current installments of long-term debt |  |
Variable Interest Entity [Line Items] |  |
Liabilities | 0.5 | 0.0
Accounts payable |  |
Variable Interest Entity [Line Items] |  |
Liabilities | 8.9 | 16.9
Accrued payroll |  |
Variable Interest Entity [Line Items] |  |
Liabilities | 0.6 | 0.7
Other accrued liabilities |  |
Variable Interest Entity [Line Items] |  |
Liabilities | 0.7 | 0.6
Senior long-term debt, excluding current installments |  |
Variable Interest Entity [Line Items] |  |
Liabilities | 29.5 | 0.0
Other noncurrent liabilities (noncontrolling interest) |  |
Variable Interest Entity [Line Items] |  |
Liabilities | $ 30.6 | $ 31.3

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