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Accumulated Other Comprehensive Income/(Loss) (Tables) | 12 Months Ended
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May 31, 2020
Accumulated Other Comprehensive Income/(Loss) [Abstract] |
Changes in Accumulated Other Comprehensive Income/(Loss) |
|  | Year ended May 31,
In millions |  | 2020 |  | 2019 |  | 2018
Beginning balance |  | $ | 0.1 |  | $ | (36.2) |  | $ | 20.0
Other comprehensive income/(loss): |  |  |  |  |  |  |  |  |
Unrealized gains/(losses) on securities, net of tax |  |  | 68.9 |  |  | 44.0 |  |  | (47.6)
Reclassification adjustment for the net gain on sale of available-for-sale ‎ securities realized in net income, net of tax |  |  | (8.5) |  |  | — |  |  | —
Foreign currency translation adjustment |  |  | (4.0) |  |  | (7.7) |  |  | (8.6)
Total other comprehensive income/(loss), net of tax |  |  | 56.4 |  |  | 36.3 |  |  | (56.2)
Ending balance |  | $ | 56.5 |  | $ | 0.1 |  | $ | (36.2)
Total tax expense/(benefit) included in other comprehensive income/(loss) |  | $ | 19.8 |  | $ | 14.2 |  | $ | (22.6)

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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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