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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Commitments and Contingencies - Minimum Future Payments Under Operating Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Aggregate rental expense for leases	$ 115.1	$ 106.2	$ 99.5
Operating Leased Assets [Line Items]
2020	100.4
2021	85.9
2022	71.0
2023	61.7
2024	53.6
After 2024	139.2
AmeriGas Propane
Operating Leased Assets [Line Items]
2020	82.1
2021	71.6
2022	60.0
2023	52.3
2024	45.0
After 2024	94.8
UGI Utilities
Operating Leased Assets [Line Items]
2020	1.2
2021	0.5
2022	0.4
2023	0.3
2024	0.3
After 2024	0.0
UGI International
Operating Leased Assets [Line Items]
2020	12.9
2021	10.0
2022	7.0
2023	5.7
2024	5.1
After 2024	6.5
Other
Operating Leased Assets [Line Items]
2020	4.2
2021	3.8
2022	3.6
2023	3.4
2024	3.2
After 2024	$ 37.9