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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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May 31, 2014
Equity [Abstract] |
Changes in accumulated other comprehensive income | The changes in accumulated other comprehensive income are as follows:
|  | Year ended May 31,
In millions |  | 2014 |  | 2013 |  | 2012
Beginning balance |  | $ | 22.0 |  |  | $ | 37.7 |  |  | $ | 37.5 |
Other comprehensive (loss)/income: |  |  |  |  |  |
Unrealized holding gains/(losses) |  | 0.3 |  |  | (24.1 | ) |  | 1.3 |
Income tax (expense)/benefit related to unrealized holding gains/(losses) |  | (0.4 | ) |  | 9.0 |  |  | (0.4 | )
Reclassification adjustment for the net gain on sale of available-for-sale securities realized in net income |  | (0.6 | ) |  | (0.9 | ) |  | (1.0 | )
Income tax expense on reclassification adjustment for the net gain on sale of available-for-sale securities |  | 0.2 |  |  | 0.3 |  |  | 0.3 |
Total other comprehensive (loss)/income, net of tax |  | (0.5 | ) |  | (15.7 | ) |  | 0.2 |
Ending balance |  | $ | 21.5 |  |  | $ | 22.0 |  |  | $ | 37.7 |

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e526-108580 + Details
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