Income Taxes (Details 3) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May. 31, 2015 |
May. 31, 2014 |
May. 31, 2013 |
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| Reconciliation of gross unrecognized tax benefits | |||
| Balance as of beginning of fiscal year | $ 40.0 | $ 26.7 | $ 41.7 |
| Additions for tax positions of the current year | 6.7 | 11.2 | 28.5 |
| Additions for tax positions of prior years | 0.8 | 4.2 | 12.2 |
| Reductions for tax positions of prior years | (0.4) | (1.8) | (0.5) |
| Settlements with tax authorities | (1.2) | 0.0 | (55.0) |
| Expiration of the statute of limitations | (6.0) | (0.3) | (0.2) |
| Balance as of end of fiscal year | $ 39.9 | $ 40.0 | $ 26.7 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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