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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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May. 31, 2015
Accounting Policies [Abstract] |
Property plant and equipment estimated useful lives of respective classes of assets | Depreciation has been calculated using the straight-line method over the estimated useful lives of the respective classes of assets as follows:
Land improvements |  | 1 - 40 years
Buildings |  | 15 - 40 years
Machinery and equipment |  | 3 - 20 years
Furniture, fixtures, office equipment and other |  | 5 - 15 years
Balances in accumulated other comprehensive income (loss), net of tax | The following table details the accumulated balances for each component of other comprehensive income (loss), net of tax (except for currency translation adjustments):
| 2015 |  | 2014 |  | 2013
Unrealized currency translation gains (losses) | $ | (113.9 | ) |  | $ | 23.7 |  |  | $ | 45.4 |
Derivative adjustments, net of reclassification adjustments | 0.9 |  |  | 1.2 |  |  | (64.5 | )
Unrealized losses on available-for-sale securities | (0.7 | ) |  | (1.1 | ) |  | (1.2 | )
Pension and post-employment benefit obligations, net of reclassification adjustments | (215.8 | ) |  | (158.1 | ) |  | (175.8 | )
Accumulated other comprehensive loss | $ | (329.5 | ) |  | $ | (134.3 | ) |  | $ | (196.1 | )
Reclassification out of Accumulated Other Comprehensive Income | The following table summarizes the reclassifications from accumulated other comprehensive loss into income (loss):
| Fifty-three weeks ended |  | Fifty-two weeks ended |  | Affected Line Item in the Consolidated Statement of Operations 1
| 2015 |  | 2014 |  |
Net derivative adjustment, net of tax: |  |  |  |  |
Cash flow hedges | $ | (0.5 | ) |  | $ | 0.1 |  |  | Interest expense, net
Cash flow hedges 2 | — |  |  | 54.9 |  |  | Selling, general and administrative expenses
| (0.5 | ) |  | 55.0 |  |  | Total before tax
| 0.2 |  |  | (20.6 | ) |  | Income tax expense (benefit)
| $ | (0.3 | ) |  | $ | 34.4 |  |  | Net of tax
Amortization of pension and postretirement healthcare liabilities: |  |  |  |  |
Net prior service benefit | $ | (4.2 | ) |  | $ | (3.4 | ) |  | Selling, general and administrative expenses
Net actuarial loss | 3.5 |  |  | 6.7 |  |  | Selling, general and administrative expenses
Curtailment | 1.5 |  |  | — |  |  | Cost of goods sold
| 0.8 |  |  | 3.3 |  |  | Total before tax
| (0.3 | ) |  | (1.2 | ) |  | Income tax benefit
| $ | 0.5 |  |  | $ | 2.1 |  |  | Net of tax
1 Amounts in parentheses indicate income recognized in the Consolidated Statements of Operations. 2 Prior year amount includes $41.8 million less deferred tax benefit of $15.6 million previously reported in accumulated other comprehensive loss.

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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