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Accumulated Other Comprehensive Income/(Loss) (Tables) | 9 Months Ended
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Feb. 29, 2020
Accumulated Other Comprehensive Income/(Loss) [Abstract] |
Changes in Accumulated Other Comprehensive Income/(Loss) |
|  | For the three months ended |  | For the nine months ended
|  | February 29, |  | February 28, |  | February 29, |  | February 28,
In millions |  | 2020 |  | 2019 |  | 2020 |  | 2019
Beginning balance |  | $ | 11.6 |  | $ | (47.4) |  | $ | 0.1 |  | $ | (36.2)
Other comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gains on available-for-sale securities, net of tax |  |  | 34.6 |  |  | 27.5 |  |  | 50.2 |  |  | 22.1
Reclassification adjustment for the (gain)/loss on sale of available-for-sale securities realized in net income, net of tax |  |  | (0.5) |  |  | (0.1) |  |  | (1.8) |  |  | 0.1
Foreign currency translation adjustment |  |  | (0.5) |  |  | 0.7 |  |  | (3.3) |  |  | (5.3)
Total other comprehensive income, net of tax |  |  | 33.6 |  |  | 28.1 |  |  | 45.1 |  |  | 16.9
Ending balance |  | $ | 45.2 |  | $ | (19.3) |  | $ | 45.2 |  | $ | (19.3)
Total tax expense included in other comprehensive income |  | $ | 11.2 |  | $ | 9.1 |  | $ | 16.0 |  | $ | 6.8

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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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