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Derivative Financial Instruments (Details 2) (Cash flow hedges, USD $)
In Millions, unless otherwise specified
 12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Canada    
Forward contracts designated as hedging instruments    
U.S. dollar forward contracts purchased, total notional amount $ 64.9ges_NotionalAmountOfForeignExchangeForwardContractsPurchased
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_StatementGeographicalAxis
= country_CA		  
U.S. dollar forward contracts outstanding 24.5invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_StatementGeographicalAxis
= country_CA		 15.2invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_StatementGeographicalAxis
= country_CA
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 11 months  
Europe    
Forward contracts designated as hedging instruments    
U.S. dollar forward contracts purchased, total notional amount 60.2ges_NotionalAmountOfForeignExchangeForwardContractsPurchased
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		  
U.S. dollar forward contracts outstanding $ 50.8invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 $ 87.1invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 11 months