Income Taxes (Details 4) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 28, 2019 |
Feb. 28, 2018 |
Feb. 28, 2017 |
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| Reconciliation of Unrecognized Tax Benefits [Roll Forward] | |||
| Unrecognized tax benefit liabilities, beginning of period | $ 89.3 | $ 39.5 | $ 30.4 |
| Increases as a result of tax positions taken during a prior period | 56.4 | 7.5 | 0.0 |
| Decreases as a result of tax positions taken during a prior period | (1.4) | (0.1) | (11.5) |
| Increases as a result of tax positions taken during the current period | 88.8 | 43.8 | 21.3 |
| Decreases related to settlements with tax authorities | (0.8) | (0.4) | 0.0 |
| Decreases related to lapse of applicable statute of limitations | (8.0) | (1.0) | (0.7) |
| Unrecognized tax benefit liabilities, end of period | $ 224.3 | $ 89.3 | $ 39.5 |
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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/disclosureRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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