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Income Taxes (Details 5) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Feb. 28, 2013
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Feb. 29, 2012
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Feb. 28, 2011
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| Reconciliation of Unrecognized Tax Benefits [Roll Forward] | |||
| Balance as of March 1 | $ 92.0 | $ 154.4 | $ 124.0 |
| Increases as a result of tax positions taken during a prior period | 1.3 | 11.0 | 9.5 |
| Decreases as a result of tax positions taken during a prior period | (9.5) | (37.0) | (1.8) |
| Increases as a result of tax positions taken during the current period | 19.5 | 29.4 | 59.5 |
| Decreases related to settlements with tax authorities | (0.3) | (59.5) | (36.0) |
| Decreases related to lapse of applicable statute of limitations | (2.4) | (6.3) | (0.8) |
| Balance as of last day of February | $ 100.6 | $ 92.0 | $ 154.4 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases 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
The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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