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v3.20.2

Leases (Narrative) (Details) | 12 Months Ended
--- | ---
May 31, 2020
Minimum [Member] |
Lessee, Lease, Description [Line Items] |
Initial term | 3 years
Maximum [Member] |
Lessee, Lease, Description [Line Items] |
Initial term | 10 years

X
- Definition Lessee, Lease, Term Of Contract + References No definition available. + Details
Name: | schl_LesseeLeaseTermOfContract
Namespace Prefix: | schl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |