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Income Taxes (Details 3) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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May 31, 2014
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May 31, 2013
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May 31, 2012
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| Reconciliation of gross unrecognized tax benefits | |||
| Balance as of beginning of fiscal year | $ 26.7 | $ 41.7 | $ 41.2 |
| Additions for tax positions of the current year | 11.2 | 28.5 | 0.4 |
| Additions for tax positions of prior years | 4.2 | 12.2 | 1.3 |
| Reductions for tax positions of prior years | (1.8) | (0.5) | (0.1) |
| Settlements with tax authorities | 0 | (55.0) | (0.7) |
| Expiration of the statute of limitations | (0.3) | (0.2) | (0.4) |
| Balance as of end of fiscal year | $ 40.0 | $ 26.7 | $ 41.7 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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