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Income Tax - Additional Information (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Jun. 30, 2020
Income Tax [Line Items] |  |
Federal net operating loss carryforwards |  | $ 1,500
Operating loss carryforward for state income tax |  | $ 203
Minimum | Federal |  |
Income Tax [Line Items] |  |
Operating loss carryforwards expiration period | 2021 |
Minimum | State |  |
Income Tax [Line Items] |  |
Operating loss carryforwards expiration period | 2029 |
Maximum | Federal |  |
Income Tax [Line Items] |  |
Operating loss carryforwards expiration period | 2037 |
Maximum | State |  |
Income Tax [Line Items] |  |
Operating loss carryforwards expiration period | 2038 |

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