Segment Information (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2011 States Year
Segment Reporting Information [Line Items]
General Partner's interest in AmeriGas OLP	101.00%
Number of states to which product sale with propane revenue	50
International Propane, Antargaz [Member]
Segment Reporting Information [Line Items]
Purchase of equity interest	50.00%
California Partnership [Member]
Segment Reporting Information [Line Items]
Gain from sale of storage facility	$ 39.9

Gain (loss) after tax expense or benefit, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Name Statement of Financial Accounting Standard (FAS)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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