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Employee Benefit Plans (Details) $ in Millions | 3 Months Ended
--- | ---
Aug. 31, 2015 USD ($)
Employee Benefit Plans (Details) [Line Items] |
Minimum threshold to trigger settlement charge | $ 4.6
United States Pension Plan |
Employee Benefit Plans (Details) [Line Items] |
Pension contributions | 0.0
United Kingdom Pension Plan |
Employee Benefit Plans (Details) [Line Items] |
Pension contributions | 0.3
Pension Plans |
Employee Benefit Plans (Details) [Line Items] |
Contributions expected in current fiscal year | $ 1.3

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- Definition Defined Benefit Plan, Settlements, Minimum Threshold to Trigger + References No definition available. + Details
Name: | schl_DefinedBenefitPlanSettlementsMinimumThresholdtoTrigger
Namespace Prefix: | schl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | schl_EmployeeBenefitPlansDetailsLineItems
Namespace Prefix: | schl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of cash or cash equivalents contributed by the entity to fund its pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
Name: | us-gaap_PensionContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | schl_DefinedBenefitPlanAxis=schl_UnitedStatesPensionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | schl_DefinedBenefitPlanAxis=schl_UnitedKingdomPensionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_OtherPensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |