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Derivatives and Hedging (Details) (USD $) | 9 Months Ended
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Feb. 28, 2015 | Feb. 28, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Derivative, Notional Amount | $ 9.1 invest_DerivativeNotionalAmount | $ 13.9 invest_DerivativeNotionalAmount
UnrealizedLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments | 1,100,000 schl_UnrealizedLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments |
Unrealized Gain On Foreign Currency Derivative Instruments, Not Designated As Hedging Instruments |  | $ 100,000 schl_UnrealizedGainOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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Balance Type: | na
Period Type: | instant

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- Definition Amount of unrealized gain recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Amount of unrealized loss recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments. + References No definition available. + Details
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- Details
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