Commitments and Contingencies - Contractual Obligations Under Supply Storage and Service Contracts (Details) $ in Millions	Sep. 30, 2016 USD ($)
Recorded Unconditional Purchase Obligation
2017	$ 362.2
2018	151.5
2019	84.8
2020	38.8
2021	35.0
After 2021	116.0
UGI Utilities Supply, Storage and Transportation Contracts
Recorded Unconditional Purchase Obligation
2017	115.1
2018	71.1
2019	50.8
2020	36.5
2021	35.0
After 2021	116.0
Midstream & Marketing Supply Contracts
Recorded Unconditional Purchase Obligation
2017	168.4
2018	80.4
2019	34.0
2020	2.3
2021	0.0
After 2021	0.0
UGI International Supply Contracts
Recorded Unconditional Purchase Obligation
2017	78.7
2018	0.0
2019	0.0
2020	0.0
2021	0.0
After 2021	$ 0.0

Amount of the recorded unconditional purchase obligation maturing 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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25383-109308

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Amount of the recorded unconditional purchase obligation maturing 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 the recorded unconditional purchase obligation maturing 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 the recorded unconditional purchase obligation maturing 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 the recorded unconditional purchase obligation maturing 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 the recorded unconditional purchase obligation maturing 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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