XML 19 R57.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Inventories (Details Textual) (USD $) In Millions, unless otherwise specified | Sep. 30, 2012 ft3 | Dec. 31, 2011 ft3
--- | --- | ---
Inventories (Textual) [Abstract] |  |
Volume of gas storage inventories released under SCAAs with non-affiliates (in cubic feet) | 3,800,000,000 | 3,300,000,000
Carrying value of gas storage inventories released under SCAAs with non-affiliates | $ 11.4 | $ 15.7

X
- Details
Name: | ugi_InventoriesTextualAbstract
Namespace Prefix: | ugi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | ugi_StorageInventoryReleased
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