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Accumulated Other Comprehensive Income/(Loss) (Tables) | 3 Months Ended
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Aug. 31, 2019
Accumulated Other Comprehensive Income/(Loss) [Abstract] |
Changes in Accumulated Other Comprehensive Income/(Loss) |
|  | For the three months ended
|  | August 31,
In millions |  | 2019 |  | 2018
Beginning balance |  | $ | 0.1 |  | $ | (36.2)
Other comprehensive income/(loss): |  |  |  |  |  |
Unrealized gains on available-for-sale securities, net of tax |  |  | 26.1 |  |  | 2.2
Reclassification adjustment for the gain on sale of available-for-sale securities realized in net income, net of tax |  |  | (0.7) |  |  | (0.1)
Foreign currency translation adjustment |  |  | 1.0 |  |  | (1.7)
Total other comprehensive income, net of tax |  |  | 26.4 |  |  | 0.4
Ending balance |  | $ | 26.5 |  | $ | (35.8)
Total tax expense included in other comprehensive income |  | $ | 8.3 |  | $ | 0.5

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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=118930883&loc=SL7669686-108580 + Details
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