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Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
Revenue recognition |  |  |  |
Amounts recorded as revenues and school operating expenses | $ 314.8 | $ 292.0 | $ 294.7 |
Percentage of impact on total revenue |  | (0.30%) | (0.10%) | 0.40%
Reduction in school operating losses included in the entity's revenue | $ 66.7 | $ 61.0 | $ 57.1 |
Minimum |  |  |  |
Revenue recognition |  |  |  |
Duration of contracts providing access to curriculum via the entity's Web site | 1 year |  |  |
Maximum |  |  |  |
Revenue recognition |  |  |  |
Duration of contracts providing access to curriculum via the entity's Web site | 2 years |  |  |

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- Definition The duration of contracts providing access to curriculum via the entity's Web site. The entity recognizes revenues over the term of the contract. + References No definition available. + Details
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- Definition Represents the percentage of impact on total revenue due to aggregate funding estimates differed from actual reimbursements. + References No definition available. + Details
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- Definition Represents the reduction in revenue attributable to school operating losses at schools where the reporting entity provides turnkey management services. + References No definition available. + Details
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- Definition Cost associated with reimbursable income. This occurs when a services entity incurs expenses on behalf of the client and passes through the cost of reimbursable expenses to a client. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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