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v3.25.2

Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
May 31, 2024 shares | May 31, 2021 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Goodwill |  |  | $ 2,871 | $ 2,888 | $ 3,030
UGI International |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Percentage of fair value exceeding carrying value |  |  | 30.00% |  |
AmeriGas Propane |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Impairment of goodwill |  |  | $ 195 |  |
Goodwill |  |  |  | 1,100 |
UGI International |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 965 |
Capital Units | Preferred stock, without par value |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Units and shares sold (in shares) | shares |  | 2,200,000 |  |  |
Notional value |  | $ 220 |  |  |
Stated value (in USD per share) | $ / shares |  | $ 100 |  |  |
Undivided beneficial ownership interest |  | 10.00% |  |  |
Liquidation preference (in USD per share) | $ / shares |  | $ 1,000 |  |  |
Capital Units | Common Stock |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity unit received by each holder (in shares) | 2.2973 |  |  |  |
Converted equity units (in shares) | shares | 5,054,030 |  |  |  |

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