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Goodwill and Other Intangibles (Tables) | 9 Months Ended
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Feb. 29, 2020
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:
| February 29, 2020 |  | May 31, 2019 |  | February 28, 2019
Gross beginning balance | $164.8 |  | $158.8 |  | $158.8
Accumulated impairment | (39.6 | ) |  | (39.6 | ) |  | (39.6 | )
Beginning balance | $125.2 |  | $119.2 |  | $119.2
Additions | — |  |  | 6.3 |  |  | — |
Foreign currency translation | 0.1 |  |  | (0.3 | ) |  | (0.1 | )
Ending balance | $125.3 |  | $125.2 |  | $119.1
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 Financial Statements for the periods indicated:
| February 29, 2020 |  | May 31, 2019 |  | February 28, 2019
Beginning balance other intangibles subject to amortization | $12.2 |  | $10.1 |  | $10.1
Additions | 1.6 |  |  | 4.5 |  |  | 0.6 |
Amortization expense | (2.4 | ) |  | (2.8 | ) |  | (2.0 | )
Foreign currency translation | 0.1 |  |  | (0.2 | ) |  | 0.0 |
Other | — |  |  | 0.6 |  |  | — |
Total other intangibles subject to amortization, net of accumulated amortization of $29.3, $26.9 and $26.1, respectively | 11.5 |  | 12.2 |  | 8.7
Total other intangibles not subject to amortization | 2.1 |  | 2.1 |  | 2.1
Total other intangibles | $13.6 |  | $14.3 |  | $10.8

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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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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