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Income Taxes and Other Taxes (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
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Feb. 28, 2015 | Feb. 28, 2014 | Feb. 28, 2015 | Feb. 28, 2014 | May 31, 2015
Income Tax And Non Income Tax Disclosure [Abstract] |  |  |  |  |
Effective Income Tax Rate, Annualized, Percent |  |  |  |  | 40.00%schl_EffectiveIncomeTaxRateAnnualizedPercent
Effective Income Tax Rate Reconciliation, Percent | 38.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations |  | 43.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations |  |
Tax settlement | $ 0 us-gaap_IncomeTaxReconciliationTaxSettlements | $ 0 us-gaap_IncomeTaxReconciliationTaxSettlements | $ 2.9 us-gaap_IncomeTaxReconciliationTaxSettlements | $ 0 us-gaap_IncomeTaxReconciliationTaxSettlements |

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- Definition Effective Income Tax Rate, Annualized, Percent + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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