Other Financial Data (Details) - Schedule of Other Financial Data Relating to Other Comprehensive Income (Parentheticals) (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Schedule of Other Financial Data Relating to Other Comprehensive Income [Abstract]
Pension Obligations tax amount	$ 23.1	$ 31.5

The tax on accumulated other comprehensive income benefit plan

No definition available.

Name:	schl_AccumulatedOtherComprehensiveIncomeBenefitPlanTax
Namespace Prefix:	schl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant