Debt (Details) - Schedule of debt - USD ($) $ in Millions	Feb. 29, 2016	May. 31, 2015	Feb. 28, 2015
Debt (Details) - Schedule of debt [Line Items]
Total Debt	$ 8.2	$ 6.0	$ 84.1
Less lines of credit, short-term debt and current portion of long-term debt	(8.2)	(6.0)	(19.1)
Total long-term debt	0.0	0.0	65.0
Line of Credit
Debt (Details) - Schedule of debt [Line Items]
Outstanding debt	$ 8.2	$ 6.0	$ 19.1
Weighted average interest rate (percentage)	3.70%	3.80%	2.70%
Revolving Credit Facility
Debt (Details) - Schedule of debt [Line Items]
Outstanding debt	$ 0.0	$ 0.0	$ 65.0
Interest rate (percent)	0.00%	0.00%	1.40%

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

No definition available.

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- Definition

Total of the portions of the carrying amounts as of the balance sheet date of lines of credit and short-term debt and long-term debt which are scheduled to be repaid within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

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

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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- Definition

Weighted average interest rate of short-term debt outstanding.

+ References

+ Details

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- Details

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- Details

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