Derivatives and Hedging (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
May 31, 2014	May 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Unrealized gain (loss) on foreign currency derivatives	$ (0.3)	$ 0.5

Unrealized Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments

No definition available.

Name:	schl_UnrealizedGainLossonForeignCurrencyDerivativeInstrumentsNotDesignatedasHedgingInstruments
Namespace Prefix:	schl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration