Share based compensation arrangement by equity instruments other than options forfeited in period weighted average grant date fair value.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options performance criteria not met.

+ Details

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options performance criteria not met weighted average grant date fair value.

+ Details

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options unit awards paid.

+ Details

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options unit awards paid weighted average grant date fair value.

+ Details

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Namespace Prefix:	ugi
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- Definition

Share Based Compensation Arrangement By Share Based Payment Units Awards Disclosure.

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

+ Details

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- Definition

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

+ Details

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- Definition

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

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap
Data Type:	num:perShareItemType
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- Definition

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.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan 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.

+ References

+ Details

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Namespace Prefix:	us-gaap
Data Type:	num:perShareItemType
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Common Stock And Equity Based Compensation (Details 4) (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
UGI unit award activity
Number of Equity-based Units, beginning balance	930,493
Weighted Average Grant Date Fair Value, Beginning of Period	$ 22.99
Number of UGI Units, Granted	285,470	231,710	269,017
Weighted Average Grant Date Fair Value, Granted	$ 34.78	$ 22.69	$ 27.26
Number of UGI Unit Awards Paid	(21,800)
Weighted Average Grant Date Fair Value, Unit awards paid	$ 26.37
Performance criteria not met
Weighted Average Grant Date Fair Value, Performance criteria not met
Number of Equity-based Units, ending balance	900,283	930,493
Weighted Average Grant Date Fair Value, End of Period	$ 24.13	$ 22.99
Vested [Member]
UGI unit award activity
Number of Equity-based Units, ending balance	598,955	570,835
Weighted Average Grant Date Fair Value, End of Period	$ 21.41	$ 21.27
Vested [Member] \| UGI Performance Units [Member]
UGI unit award activity
Number of UGI Units, Vested	198,749
Weighted Average Grant Date Fair Value, Vested	$ 28.84
Number of UGI Unit Awards Paid	(185,374)
Weighted Average Grant Date Fair Value, Unit awards paid	$ 30.17
Vested [Member] \| UGI Stock Units [Member]
UGI unit award activity
Number of UGI Units, Vested	36,545
Weighted Average Grant Date Fair Value, Vested	$ 30.54
Non-Vested [Member]
UGI unit award activity
Number of Equity-based Units, ending balance	301,328	359,658
Weighted Average Grant Date Fair Value, End of Period	$ 29.56	$ 25.71
Non-Vested [Member] \| UGI Performance Units [Member]
UGI unit award activity
Number of UGI Units, Granted	223,525
Weighted Average Grant Date Fair Value, Granted	$ 35.19
Number of UGI Units, Forfeited	(77,906)
Weighted Average Grant Date Fair Value, Forfeited	$ 30.18
Number of UGI Units, Vested	(198,749)
Weighted Average Grant Date Fair Value, Vested	$ 28.84
Non-Vested [Member] \| UGI Stock Units [Member]
UGI unit award activity
Number of UGI Units, Granted	61,945
Weighted Average Grant Date Fair Value, Granted	$ 33.31
Number of UGI Units, Forfeited	(30,600)
Weighted Average Grant Date Fair Value, Forfeited	$ 34.88
Number of UGI Units, Vested	(36,545)
Weighted Average Grant Date Fair Value, Vested	$ 30.54
UGI Performance Units [Member]
UGI unit award activity
Number of UGI Units, Granted	223,525
Weighted Average Grant Date Fair Value, Granted	$ 35.19
Number of UGI Units, Forfeited	(77,906)
Weighted Average Grant Date Fair Value, Forfeited	$ 30.18
Number of UGI Unit Awards Paid	(185,374)
Weighted Average Grant Date Fair Value, Unit awards paid	$ 30.17
UGI Stock Units [Member]
UGI unit award activity
Number of UGI Units, Granted	61,945	27,060	52,767
Weighted Average Grant Date Fair Value, Granted	$ 33.31
Number of UGI Units, Forfeited	(30,600)
Weighted Average Grant Date Fair Value, Forfeited	$ 34.88