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Utility Regulatory Assets and Liabilities and Regulatory Matters (Details) - UGI Utilities - USD ($) $ in Millions | Dec. 31, 2020 | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Regulatory Assets |  |  |
Regulatory assets | $ 395.0 | $ 397.0 | $ 391.0
Regulatory Liabilities |  |  |
Regulatory liabilities | 346.0 | 353.0 | 351.0
Postretirement benefit overcollections |  |  |
Regulatory Liabilities |  |  |
Regulatory liabilities | 13.0 | 13.0 | 14.0
Deferred fuel and power refunds |  |  |
Regulatory Liabilities |  |  |
Regulatory liabilities | 24.0 | 29.0 | 6.0
State tax benefits — distribution system repairs |  |  |
Regulatory Liabilities |  |  |
Regulatory liabilities | 28.0 | 28.0 | 26.0
PAPUC temporary rates order |  |  |
Regulatory Liabilities |  |  |
Regulatory liabilities | 5.0 | 7.0 | 25.0
Excess federal deferred income taxes |  |  |
Regulatory Liabilities |  |  |
Regulatory liabilities | 272.0 | 274.0 | 278.0
Other |  |  |
Regulatory Liabilities |  |  |
Regulatory liabilities | 4.0 | 2.0 | 2.0
Income taxes recoverable |  |  |
Regulatory Assets |  |  |
Regulatory assets | 126.0 | 124.0 | 121.0
Underfunded pension and postretirement plans |  |  |
Regulatory Assets |  |  |
Regulatory assets | 172.0 | 175.0 | 175.0
Environmental costs |  |  |
Regulatory Assets |  |  |
Regulatory assets | 59.0 | 61.0 | 58.0
Removal costs, net |  |  |
Regulatory Assets |  |  |
Regulatory assets | 24.0 | 26.0 | 27.0
Other |  |  |
Regulatory Assets |  |  |
Regulatory assets | $ 14.0 | $ 11.0 | $ 10.0

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