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Joint Ventures and Variable Interest Entities - Equity in Earnings (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Financial Information |  |  |  |
Equity in (losses) earnings of joint ventures | $ (303,503) | $ 7,489 | $ (286,218) | $ 27,358
Impairment loss | $ 307,000 |  |  |
Unconsolidated joint ventures |  |  |  |
Financial Information |  |  |  |
Equity in (losses) earnings of joint ventures |  |  | (286,200) | 27,400
Unconsolidated joint ventures | Pass-through joint ventures |  |  |  |
Financial Information |  |  |  |
Equity in (losses) earnings of joint ventures |  |  | 18,200 | 19,000
Unconsolidated joint ventures | Other joint ventures |  |  |  |
Financial Information |  |  |  |
Equity in (losses) earnings of joint ventures |  |  | $ (304,400) | $ 8,400

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