Partners capital and incentive compensation plans.

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Percent of the target award paid to grantee at fiftieth percentile.

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Percent of the target award paid to grantee at fortieth percentile.

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Percent of the target award paid to grantee at hundredth percentile.

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Period for expected volatility of performance unit awards.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph A240

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

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-Section F

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

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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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-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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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-Publisher FASB

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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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The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Description of pertinent provisions of equity-based compensation awards that have actual or potential impact upon the company's financial statements.

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Partners' Capital and Incentive Compensation Plans (Details Textuals) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended								12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009	Sep. 30, 2011 Common Unit Awards [Member] Year	Sep. 30, 2010 Common Unit Awards [Member]	Sep. 30, 2009 Common Unit Awards [Member]	Sep. 30, 2011 2010 Propane Plan [Member]	Jul. 30, 2010 2010 Propane Plan [Member]	Sep. 30, 2011 Nonexecutive Propane Plan [Member]	Sep. 30, 2010 2010 Propane Plan [Member]	Sep. 30, 2011 UGI Stock Option [Member] Year	Sep. 30, 2010 AmeriGas Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Period of Award for Exercise							10 years
Performance unit awards payment description												Performance Units will not be paid if AmeriGas Partners’ TUR is below the 40th percentile of the peer group. At the 40th percentile, the grantee will be paid an award equal to 50% of the target award; at the 50th percentile, 100%; and at the 100th percentile, 200%.
Percent of the target award paid to grantee at 40th percentile												50.00%
Percent of the target award paid to grantee at 50th percentile												100.00%
Percent of the target award paid to grantee at 100th percentile												200.00%
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition				1.8							1.9
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized				$ 2,631							$ 792
Term of the AmeriGas Performance unit awards	10 years								3 years	3 years
Common Units were available for future award grants	2,747,263							2,800,000
Awards granted	49,287	57,750	60,200	41,064	49,650	38,350
Number of Common Units Subject to Award	92,718	92,749		155,356
Partners' Capital and Incentive Compensation Plans (Textuals) [Abstract]
Equity based compensation expenses	3,257	3,127	3,035
Total fair value of Common Unit-based awards vested	2,049	1,978	1,645
Liabilities associated with Common Unit-based awards	$ 1,198	$ 1,266
Weighted-average grant date fair values per Common Unit	$ 53.19	$ 41.39	$ 31.94
Expected volatility of performance unit awards		3 years