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Goodwill and Other Intangibles (Tables) | 3 Months Ended
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Aug. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Activity in Goodwill for the Periods Indicated | The following table summarizes the activity in Goodwill for the periods indicated:
| Three months ended August 31, 2017 |  | Twelve months ended May 31, 2017 |  | Three months ended August 31, 2016
Beginning balance | $ | 118.9 |  |  | $ | 116.2 |  |  | $ | 116.2 |
Additions | — |  |  | 2.8 |  |  | — |
Foreign currency translation | 0.3 |  |  | (0.1 | ) |  | 0.1 |
Total goodwill | $ | 119.2 |  |  | $ | 118.9 |  |  | $ | 116.3 |
Summary of Activity in Total Other Intangibles for the Periods Indicated | The following table summarizes the activity in other intangibles included in “Other assets and deferred charges” on the Company’s condensed consolidated balance sheets for the periods indicated:
| Three months ended August 31, 2017 |  | Twelve months ended May 31, 2017 |  | Three months ended August 31, 2016
Beginning balance other intangibles subject to amortization | $ | 9.0 |  |  | $ | 4.7 |  |  | $ | 4.7 |
Additions | 0.1 |  |  | 7.0 |  |  | 0.2 |
Amortization expense | (0.5 | ) |  | (2.5 | ) |  | (0.6 | )
Foreign currency translation | 0.0 |  |  | (0.2 | ) |  | (0.1 | )
Total other intangibles subject to amortization, net of accumulated amortization of $22.5, $22.0 and $20.1, respectively | $ | 8.6 |  |  | $ | 9.0 |  |  | $ | 4.2 |
Total other intangibles not subject to amortization | $ | 2.1 |  |  | $ | 2.1 |  |  | $ | 2.1 |
Total other intangibles | $ | 10.7 |  |  | $ | 11.1 |  |  | $ | 6.3 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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