Income Taxes (Details 4) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 28, 2018 |
Feb. 28, 2017 |
Feb. 29, 2016 |
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| Reconciliation of Unrecognized Tax Benefits [Roll Forward] | |||
| Unrecognized tax benefit liabilities, beginning of period | $ 39.5 | $ 30.4 | $ 85.5 |
| Increases as a result of tax positions taken during a prior period | 7.5 | 0.0 | 0.1 |
| Decreases as a result of tax positions taken during a prior period | (0.1) | (11.5) | (1.2) |
| Increases as a result of tax positions taken during the current period | 43.8 | 21.3 | 3.7 |
| Decreases related to settlements with tax authorities | (0.4) | 0.0 | (54.7) |
| Decreases related to lapse of applicable statute of limitations | (1.0) | (0.7) | (3.0) |
| Unrecognized tax benefit liabilities, end of period | $ 89.3 | $ 39.5 | $ 30.4 |
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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. 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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