Significant Accounting Policies (Details) (USD $) In Thousands	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Income per limited partner unit
Common Unitholders' interest in net income attributable to AmeriGas Partners under the two-class method for MLPs	$ 131,482	$ 160,037	$ 205,039
Weighted average Common units outstanding - basic (thousands)	57,119	57,076	57,038
Potentially dilutive Common Units (thousands)	51	47	44
Weighted average Common units outstanding - diluted (thousands)	57,170	57,123	57,082

Common Unitholders interest in net income attributable to AmeriGas Partners Under the two-class method for MLPs.

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- Details

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- Definition

Weighted average number of general partnership units outstanding determined by relating the portion of time within a reporting period that general partnership units have been outstanding to the total time in that period.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section F

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770

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Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit.

+ References

+ Details

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The sum of dilutive potential limited partnership units used in the calculation of the diluted per-unit computation.

+ Details

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