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Inventories (Details) (UGI Utilities, USD $) In Millions, unless otherwise specified | 12 Months Ended |  |  | 0 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2014 Minimum | Sep. 30, 2014 Maximum | Sep. 30, 2014 Storage Contract Administrative Agreements Storage_Agreement ft3 | Sep. 30, 2013 Storage Contract Administrative Agreements ft3 | Nov. 01, 2014 New Storage Agreement Energy Services
Public Utilities, Inventory |  |  |  |  |
Number of storage agreements (in storage agreements) |  |  | 4 |  |
Volume of gas storage inventories released under SCAAs with non-affiliates (In Cubic Feet) |  |  | 3,900,000,000 | 600,000,000 |
Carrying value of gas storage inventories released under SCAAs with non-affiliates |  |  | $ 16.8 | $ 2.4 |
Storage Agreement Term | 1 year | 3 years |  |  | 1 year

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- Definition Number Of Storage Agreements + References No definition available. + Details
Name: | ugi_NumberOfStorageAgreements
Namespace Prefix: | ugi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Storage Agreement Term + References No definition available. + Details
Name: | ugi_StorageAgreementTerm
Namespace Prefix: | ugi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Carrying amount as of the balance sheet date of natural gas storage inventories released under SCAA's with non-affiliates. + References No definition available. + Details
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Namespace Prefix: | ugi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Volume of gas storage inventories released. + References No definition available. + Details
Name: | ugi_VolumeOfGasStorageInventoriesReleased
Namespace Prefix: | ugi_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration