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Segment Information (Details)	12 Months Ended
	Sep. 30, 2016 county state Customer segment
Segment Reporting [Abstract]
Number of reportable segments | segment	6
Number of states to which product sale with propane revenue | state	50
Segment Reporting Information
Number of counties	1
UGI Utilities
Segment Reporting Information
Number of counties	2
Customer Concentration Risk | Revenues, Consolidated
Segment Reporting Information
Number of customers | Customer	0

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- Definition

Counties Of Operation, Number

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No definition available.

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X

- Definition

Number Of States To Which Product Sale With Propane Revenue

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No definition available.

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Namespace Prefix:	ugi_
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Balance Type:	na
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- Definition

Number of Customers Exceeding Threshold

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No definition available.

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Namespace Prefix:	ugi_
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Balance Type:	na
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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No definition available.

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No definition available.

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- Definition

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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No definition available.

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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ugi_GasUtilityMember
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X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
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- Details

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