Debt - Schedule of Principal Repayments of Long-term Debt (Details) $ in Millions	Sep. 30, 2023 USD ($)
Debt Instrument [Line Items]
2024	$ 57
2025	1,687
2026	964
2027	603
2028	865
AmeriGas Propane
Debt Instrument [Line Items]
2024	0
2025	700
2026	675
2027	525
2028	500
UGI International
Debt Instrument [Line Items]
2024	1
2025	0
2026	0
2027	0
2028	317
Midstream & Marketing
Debt Instrument [Line Items]
2024	12
2025	8
2026	8
2027	8
2028	8
Utilities
Debt Instrument [Line Items]
2024	6
2025	6
2026	281
2027	70
2028	40
UGI Corporation
Debt Instrument [Line Items]
2024	38
2025	973
2026	0
2027	0
2028	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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