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Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
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Feb. 28, 2015
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Feb. 28, 2014
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| Income Tax Disclosure [Abstract] | ||
| Operating loss carryforwards | $ 300.3us-gaap_OperatingLossCarryforwards | |
| Operating loss carryforwards subject to expiration | 279.7us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration | |
| Operating loss carryforwards not subject to expiration | 20.6us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration | |
| Tax benefits related to resolution of certain tax positions and expiration of statutes of limitations | 6.9us-gaap_IncomeTaxReconciliationTaxSettlementsOther | |
| Non-current unrecognized tax benefit liabilities, including interest and penalties | 79.7stz_UnrecognizedTaxBenefitLiabilitiesNoncurrentIncludingInterestAndPenalties | 94.2stz_UnrecognizedTaxBenefitLiabilitiesNoncurrentIncludingInterestAndPenalties |
| Unrecognized tax benefit liabilities that would impact effective tax rate if recognized | 85.5us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate | 101.5us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |
| Estimate of change in unrecognized tax benefit liability reasonably possible as a result of examination or expiration of statutes of limitation, Minimum | 3us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound | |
| Estimate of change in unrecognized tax benefit liability reasonably possible as a result of examination or expiration of statutes of limitation, Maximum | $ 53us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound |
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- Definition
Unrecognized tax benefit liabilities, noncurrent, including interest and penalties. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates. No definition available.
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- Details
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other income tax settlements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of (increase) decrease reasonably possible in the estimated lower bound of the unrecognized tax benefit for a tax position taken or expected to be taken. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of (increase) decrease reasonably possible in the estimated upper bound of the unrecognized tax benefit for a tax position taken or expected to be taken. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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