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v3.20.2

Debt - Schedule of Short-term Debt (Footnotes) (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2020 EUR (€) | Sep. 30, 2019 EUR (€)
Short-term Debt [Line Items] |  |  |  |  |  |
Repayment of debt |  | $ 86,000,000 | $ 738,000,000 | $ 149,000,000 |  |
AmeriGas OLP |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 600,000,000 | 600,000,000 |  |  |
Borrowing |  | 186,000,000 | 328,000,000 |  |  |
AmeriGas OLP | Letter of Credit | 2019 Credit Agreement | Line of Credit |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 150,000,000 |  |  |  |
UGI International LLC |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | € |  |  |  |  | € 300,000,000 | € 300,000,000
Borrowing |  |  | 210,000,000 |  | € 0 | € 193,000,000
Energy Services |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 260,000,000 | 200,000,000 |  |  |
Borrowing |  | 0 | 45,000,000 |  |  |
Energy Services | Letter of Credit | 2019 Credit Agreement | Line of Credit |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 50,000,000 |  |  |  |
UGI Utilities |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 350,000,000 | 350,000,000 |  |  |
Borrowing |  | 141,000,000 | 166,000,000 |  |  |
UGI Utilities | Letter of Credit | 2019 Credit Agreement | Line of Credit |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 100,000,000 |  |  |  |
UGI Corporation |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 300,000,000 | 300,000,000 |  |  |
Borrowing |  | 300,000,000 | $ 300,000,000 |  |  |
UGI Corporation | Subsequent Event |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Repayment of debt | $ 30,000,000 |  |  |  |  |
UGI Corporation | Letter of Credit | 2019 Credit Agreement | The UGI Corporation Senior Credit Facility |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | $ 10,000,000 |  |  |  |

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