Debt - AmeriGas Propane (Details) - AmeriGas OLP - USD ($)	Sep. 30, 2022	Sep. 28, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Borrowings (up to)	$ 600,000,000		$ 600,000,000
AmeriGas OLP Credit Agreement | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Borrowings (up to)	$ 100,000,000	$ 100,000,000	$ 150,000,000
AmeriGas OLP Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings (up to)		600,000,000
Option to increase capacity		$ 900,000,000