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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Nov. 30, 2019
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:
| Three months ended November 30, 2019
| Foreign currency translation adjustments |  | Retirement benefit plans |  | Total
Beginning balance at September 1, 2019 | $(49.1) |  | $(12.4) |  | $(61.5)
Other comprehensive income (loss) before reclassifications | 3.9 |  |  | — |  |  | 3.9 |
Less amount reclassified from Accumulated other comprehensive income (loss): |  |  |  |  |
Amortization of gains and losses (net of tax of $0.0) | — |  |  | 0.3 |  |  | 0.3 |
Amortization of prior service credit (net of tax of $0.0) | — |  |  | (0.1 | ) |  | (0.1 | )
Other comprehensive income (loss) | 3.9 |  |  | 0.2 |  |  | 4.1 |
Ending balance at November 30, 2019 | $(45.2) |  | $(12.2) |  | $(57.4)
| Three months ended November 30, 2018
| Foreign currency translation adjustments |  | Retirement benefit plans |  | Total
Beginning balance at September 1, 2018 | $(45.0) |  | $(13.6) |  | $(58.6)
Other comprehensive income (loss) before reclassifications | (0.6 | ) |  | — |  |  | (0.6 | )
Less amount reclassified from Accumulated other comprehensive income (loss): |  |  |  |  |
Amortization of gains and losses (net of tax of $0.0) | — |  |  | 0.2 |  |  | 0.2 |
Postretirement benefit plan remeasurement (net of tax of $0.7) | — |  |  | 2.0 |  |  | 2.0 |
Amortization of prior service credit (net of tax of $0.0) | — |  |  | (0.1 | ) |  | (0.1 | )
Other reclassifications (net of tax of $0.2) | — |  |  | 0.6 |  |  | 0.6 |
Other comprehensive income (loss) | (0.6 | ) |  | 2.7 |  |  | 2.1 |
Ending balance at November 30, 2018 | $(45.6) |  | $(10.9) |  | $(56.5)
| Six months ended November 30, 2019
| Foreign currency translation adjustments |  | Retirement benefit plans |  | Total
Beginning balance at June 1, 2019 | $(47.1) |  | $(12.6) |  | $(59.7)
Other comprehensive income (loss) before reclassifications | 1.9 |  | — |  |  | 1.9
Less amount reclassified from Accumulated other comprehensive income (loss): |  |  |  |  |
Amortization of gains and losses (net of tax of $0.0) | — |  |  | 0.5 |  | 0.5
Amortization of prior service credit (net of tax of $0.0) | — |  |  | (0.1) |  | (0.1)
Other comprehensive income (loss) | 1.9 |  | 0.4 |  | 2.3
Ending balance at November 30, 2019 | $(45.2) |  | $(12.2) |  | $(57.4)
| Six months ended November 30, 2018
| Foreign currency translation adjustments |  | Retirement benefit plans |  | Total
Beginning balance at June 1, 2018 | $(41.9) |  | $(13.8) |  | $(55.7)
Other comprehensive income (loss) before reclassifications | (3.7) |  | — |  |  | (3.7)
Less amount reclassified from Accumulated other comprehensive income (loss): |  |  |  |  |
Amortization of gains and losses (net of tax of $0.0) | — |  |  | 0.4 |  | 0.4
Postretirement benefit plan remeasurement (net of tax of $0.7) | — |  |  | 2.0 |  | 2.0
Amortization of prior service credit (net of tax of $0.0) | — |  |  | (0.1) |  | (0.1)
Other reclassifications (net of tax of $0.2) | — |  |  | 0.6 |  | 0.6
Other comprehensive income (loss) | (3.7) |  | 2.9 |  | (0.8)
Ending balance at November 30, 2018 | $(45.6) |  | $(10.9) |  | $(56.5)
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, | Condensed Consolidated Statements of Operations line item
| 2019 |  | 2018 |  | 2019 |  | 2018
Employee benefit plans: |  |  |  |  |  |  |  |
Amortization of unrecognized (gain) loss | $0.3 |  | $0.2 |  | $0.5 |  | $0.4 | Other components of net periodic benefit (cost)
Amortization of prior service credit | (0.1) |  | (0.1) |  | (0.1) |  | (0.1) | Other components of net periodic benefit (cost)
Less: Tax effect | 0.0 |  | 0.0 |  | 0.0 |  | 0.0 | Provision (benefit) for income taxes
Total cost, net of tax | $0.2 |  | $0.1 |  | $0.4 |  | $0.3 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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