Debt (Details)	1 Months Ended	6 Months Ended
	Apr. 30, 2024 USD ($)	Mar. 31, 2024 USD ($) cure	Nov. 30, 2023 USD ($)	Nov. 15, 2023 USD ($)	Nov. 14, 2023 USD ($)	Nov. 09, 2023 USD ($)
2022 AmeriGas OLP Credit Agreement | AmeriGas OLP
Debt Instrument [Line Items]
Number of available equity cure | cure		5
Equity cure used | cure		1
Debt instrument, actual leverage ratio		5.74
2022 AmeriGas OLP Credit Agreement | AmeriGas OLP | Maximum
Debt Instrument [Line Items]
Debt instrument, financial covenant leverage ratio		5.75
2022 AmeriGas OLP Credit Agreement | AmeriGas OLP | Minimum
Debt Instrument [Line Items]
Debt instrument, financial covenant leverage ratio		5.50
Credit Agreement | UGI Corporation Credit Facility Agreement | Revolver | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 300,000,000
Credit Agreement | UGI Corporation Credit Facility Agreement, Variable-Rate Term Loan 1 | Subsequent event
Debt Instrument [Line Items]
Principal amount	$ 215,000,000
Debt Instrument, Interest Rate, Increase (Decrease)	0.375%
Credit Agreement | UGI Corporation Credit Facility Agreement, Variable-Rate Term Loan 2 | Subsequent event
Debt Instrument [Line Items]
Principal amount	$ 300,000,000
Debt Instrument, Interest Rate, Increase (Decrease)	0.375%
Credit Agreement | UGI Corporation Credit Facility Agreement, Variable-Rate Term Loan 3 | Subsequent event
Debt Instrument [Line Items]
Principal amount	$ 250,000,000
Credit Agreement | 2022 AmeriGas OLP Credit Agreement | AmeriGas OLP | Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 400,000,000	$ 600,000,000
Credit Agreement | UGI Utilities Credit Agreement | Utilities | Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 375,000,000
Increase to limit						125,000,000
Credit Agreement | UGI Utilities Credit Agreement | Utilities | Letters of credit
Debt Instrument [Line Items]
Maximum borrowing capacity						50,000,000
Credit Agreement | UGI Utilities Credit Agreement | Utilities | Swingline loans
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 38,000,000
Senior Notes | 5.50 Percent Senior Notes | AmeriGas Partners And AmeriGas Finance Corp.
Debt Instrument [Line Items]
Repurchase amount		$ 7,000,000
Interest rate		5.50%
Senior Notes | 5.875 Percent Senior Notes | AmeriGas Partners And AmeriGas Finance Corp.
Debt Instrument [Line Items]
Repurchase amount		$ 11,000,000
Interest rate		5.875%
Senior Notes | 5.75 Percent Senior Notes | AmeriGas Partners And AmeriGas Finance Corp.
Debt Instrument [Line Items]
Repurchase amount		$ 13,000,000
Interest rate		5.75%
Senior Notes | 9.375 Percent Senior Notes | AmeriGas Partners And AmeriGas Finance Corp.
Debt Instrument [Line Items]
Repurchase amount		$ 7,000,000
Interest rate		9.375%
Senior Notes | Senior Notes Due 2030 | Utilities
Debt Instrument [Line Items]
Principal amount			$ 25,000,000
Interest rate			6.02%
Senior Notes | Senior Notes Due 2033 | Utilities
Debt Instrument [Line Items]
Principal amount			$ 150,000,000
Interest rate			6.10%
Senior Notes | Senior Notes Due 2053 | Utilities
Debt Instrument [Line Items]
Principal amount			$ 75,000,000
Interest rate			6.40%
Senior Notes | Senior Notes | AmeriGas Partners And AmeriGas Finance Corp.
Debt Instrument [Line Items]
Aggregate principal amount		$ 38,000,000
Long-term debt, gross		$ 2,362,000,000