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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Nov. 30, 2015
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following tables summarize the activity in Accumulated other comprehensive income (loss), net of tax, by component for the periods indicated:
| Six months ended November 30, 2015
| Foreign currency translation adjustments |  | Retirement benefit plans |  | Total
Beginning balance | $ | (31.9 | ) |  | $ | (45.1 | ) |  | $ | (77.0 | )
Other comprehensive income (loss) before reclassifications | (8.2 | ) |  | — |  |  | $ | (8.2 | )
Less: amount reclassified from Accumulated other comprehensive income (loss) | — |  |  | 1.5 |  |  | 1.5 |
Other comprehensive income (loss) | (8.2 | ) |  | 1.5 |  |  | (6.7 | )
Ending balance | $ | (40.1 | ) |  | $ | (43.6 | ) |  | $ | (83.7 | )
| Six months ended November 30, 2014
| Foreign currency translation adjustments |  | Retirement benefit plans |  | Total
Beginning balance | $ | (16.7 | ) |  | $ | (38.5 | ) |  | $ | (55.2 | )
Other comprehensive income (loss) before reclassifications | (7.5 | ) |  | (4.6 | ) |  | $ | (12.1 | )
Less: amount reclassified from Accumulated other comprehensive income (loss) | — |  |  | 3.1 |  |  | 3.1 |
Other comprehensive income (loss) | (7.5 | ) |  | (1.5 | ) |  | (9.0 | )
Ending balance | $ | (24.2 | ) |  | $ | (40.0 | ) |  | $ | (64.2 | )
Reclassification out of Accumulated Other Comprehensive Income | The following table presents the impact on earnings of reclassifications out of Accumulated other comprehensive income (loss) for the periods indicated:
| Three months ended November 30, |  | Six months ended November 30, | Affected line items in the condensed consolidated statements of operations
| 2015 |  | 2014 |  | 2015 |  | 2014 |
Employee benefit plans: |  |  |  |  |  |  |  |
Amortization of prior service cost (credit) | $ | (0.0 | ) |  | $ | (0.0 | ) |  | $ | (0.0 | ) |  | $ | (0.0 | ) | Selling, general and administrative
Amortization of unrecognized gain (loss) included in net periodic cost (credit) | 1.2 |  |  | 0.7 |  |  | 2.2 |  |  | 1.4 |  | Selling, general and administrative
Settlement charge | — |  |  | 3.7 |  |  | — |  |  | 3.7 |  | Selling, general and administrative
Less: Tax effect | (0.4 | ) |  | (1.8 | ) |  | (0.7 | ) |  | (1.9 | ) | Income tax expense (benefit)
Total expense, net of tax | $ | 0.8 |  |  | $ | 2.6 |  |  | $ | 1.5 |  |  | $ | 3.2 |  |

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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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