Credit lines available

No definition available.

Name:	schl_CreditLinesAvailable
Namespace Prefix:	schl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

-- None. No documentation exists for this element. --

+ References

No definition available.

+ Details

Name:	schl_DebtDetailsLineItems
Namespace Prefix:	schl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Available Increase in Borrowing Capacity

+ References

No definition available.

+ Details

Name:	schl_DebtInstrumentAvailableIncreaseinBorrowingCapacity
Namespace Prefix:	schl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	schl_LineOfCreditFacilityFeePercentage
Namespace Prefix:	schl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Standby Letters of Credit

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=schl_LoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=schl_FederalFundsRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_DomesticLineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=schl_TwoThousandandSevenLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=schl_SwinglineFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Narrative (Details) - USD ($)	6 Months Ended
Debt - Narrative (Details) - USD ($)	Nov. 30, 2018	May 31, 2018	Nov. 30, 2017
Debt (Details) [Line Items]
Standby letters of credit	$ 5,300,000
Debt	13,500,000	$ 7,900,000	$ 11,300,000
Loan Agreement
Debt (Details) [Line Items]
Borrowing capacity	$ 375,000,000
Facility fee (percentage)	0.20%
Increase in borrwoing capacity available under accordion feature	$ 150,000,000
Standby letters of credit	$ 400,000
Loan Agreement \| Minimum
Debt (Details) [Line Items]
Facility fee (percentage)	0.20%
Loan Agreement \| Maximum
Debt (Details) [Line Items]
Facility fee (percentage)	0.40%
Loan Agreement \| Federal Funds Rate
Debt (Details) [Line Items]
Variable rate (percentage)	0.50%
Loan Agreement \| Eurodollar
Debt (Details) [Line Items]
Variable rate (percentage)	1.00%
Loan Agreement \| Base Rate
Debt (Details) [Line Items]
Variable rate (percentage)	0.175%
Loan Agreement \| Base Rate \| Minimum
Debt (Details) [Line Items]
Variable rate (percentage)	0.175%
Loan Agreement \| Base Rate \| Maximum
Debt (Details) [Line Items]
Variable rate (percentage)	0.60%
Loan Agreement \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt (Details) [Line Items]
Variable rate (percentage)	1.175%
Loan Agreement \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt (Details) [Line Items]
Variable rate (percentage)	1.60%
Unsecured Debt \| Domestic Line of Credit
Debt (Details) [Line Items]
Borrowing capacity	$ 25,000,000
Standby letters of credit	4,900,000
Short-term debt	0	0	0
Remaining borrowing capacity	$ 20,100,000
Expiration period (in days)	365 days
Secured Debt \| Line of Credit
Debt (Details) [Line Items]
Borrowing capacity	$ 30,000,000
Expiration period (in days)	364 days
Debt	$ 13,500,000	$ 7,900,000	$ 0
Weighted average interest rate	3.80%	2.90%	3.80%
Available credit	$ 16,500,000
Revolving Credit Facility \| 2007 Loan Agreement \| Letter of Credit
Debt (Details) [Line Items]
Borrowing capacity	50,000,000
Revolving Credit Facility \| 2007 Loan Agreement \| Swingline Facility
Debt (Details) [Line Items]
Borrowing capacity	$ 15,000,000