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Other Comprehensive (Loss)/Income (Tables) | 12 Months Ended
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May 31, 2013
Equity [Abstract] |
Components of other comprehensive (loss)/income | The following table sets forth the components of other comprehensive (loss)/income:
|  | Year ended May 31,
In millions |  | 2013 |  | 2012 |  | 2011
Unrealized holding (losses)/gains |  | $ | (24.1 | ) |  | $ | 1.3 |  |  | $ | (6.0 | )
Income tax benefit/(expense) related to unrealized holding (losses)/gains |  | 9.0 |  |  | (0.4 | ) |  | 1.9 |
Reclassification adjustment for the net gain on sale of available-for-sale securities realized in net income |  | (0.9 | ) |  | (1.0 | ) |  | (1.3 | )
Income tax expense on reclassification adjustment for the net gain on sale of available-for-sale securities |  | 0.3 |  |  | 0.3 |  |  | 0.5 |
Other comprehensive (loss)/income |  | $ | (15.7 | ) |  | $ | 0.2 |  |  | $ | (4.9 | )

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- Definition Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or 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=20435746&loc=d3e526-108580 + Details
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