Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details Textual)

v2.4.1.9
Commitments and Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Loss Contingencies [Line Items]      
Employment contracts, aggregate commitment for future compensation and severance $ 40.4stz_EmploymentContractsAggregateCommitmentForFutureCompensationAndSeverance    
Accrual for deferred compensation costs 9.6us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability    
Rental expense 58.9us-gaap_LeaseAndRentalExpense 65.1us-gaap_LeaseAndRentalExpense 60.4us-gaap_LeaseAndRentalExpense
Minimum [Member]      
Loss Contingencies [Line Items]      
Automatic renewal period for employment contracts 1 year    
Maximum [Member]      
Loss Contingencies [Line Items]      
Automatic renewal period for employment contracts indefinite    
Guarantee obligations [Member]      
Loss Contingencies [Line Items]      
Gain on release from indemnification 7.5us-gaap_OtherNonrecurringGain
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_GuaranteeObligationsMember
   
Indemnification liabilities 3.7us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_GuaranteeObligationsMember
11.6us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_GuaranteeObligationsMember
 
Potential future payments 71.2us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_GuaranteeObligationsMember
   
Amount subject to recovery from third parties under recourse provisions $ 57.6stz_EstimatedRecoveryFromThirdParty
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_GuaranteeObligationsMember