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Schedule I - Condensed Financial Information of Parent Company (Details) ¥ in Millions, $ in Millions | 12 Months Ended | 30 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2019 CNY (¥) | Jun. 30, 2019 CNY (¥) | Jan. 10, 2017 USD ($) | Jan. 10, 2017 CNY (¥)
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |
Restricted Net Assets Threshold for Condensed Parent Company Financial Statements, Percent Requirement | 25.00% |  |  |  |  |
Corporate Joint Venture |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |
Contractual Obligation, Payment |  | $ 69.9 | ¥ 480.0 |  |  |
Contractual Obligation Future Minimum Payments Due in Fiscal Year 2020 | $ 8.7 | $ 8.7 |  | ¥ 60.0 |  |
Contractual Obligation |  |  |  |  | $ 78.0 | ¥ 540.0
Design Fees [Member] | Corporate Joint Venture |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |
Contractual Obligation |  |  |  |  | 2.8 |
Construction and Procurement Fees | Corporate Joint Venture |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |
Contractual Obligation |  |  |  |  | $ 75.2 |

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