Distribution System Improvement Charge, Percent of Amount Billed to Customers

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- Definition

Maximum Period Post Petition to File General Rate Filing

+ References

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

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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.

+ References

No definition available.

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Utility Regulatory Assets and Liabilities and Regulatory Matters - Narrative (Details) - USD ($) $ in Millions								1 Months Ended	9 Months Ended	12 Months Ended
	Oct. 20, 2017	Jul. 01, 2017	Jan. 19, 2017	Jan. 01, 2017	Oct. 14, 2016	Apr. 01, 2016	Apr. 01, 2015	Mar. 31, 2016	Jun. 30, 2017	Sep. 30, 2014	Sep. 30, 2016	Jun. 30, 2016
Pennsylvania Public Utility Commission
Regulatory Assets
Maximum period since petition to file a general rate filing									5 years
DSIC, percent of amount billed to customers										0.00%
Pennsylvania Public Utility Commission \| PNG
Regulatory Assets
Requested operating revenue increase			$ 21.7
DSIC, percent of amount billed to customers							0.00%
Pennsylvania Public Utility Commission \| PNG \| Subsequent Event
Regulatory Assets
DSIC, percent of amount billed to customers		7.50%
Pennsylvania Public Utility Commission \| PNG \| Forecast
Regulatory Assets
Increase in annual base distribution rate	$ 11.3
Pennsylvania Public Utility Commission \| UGI Gas
Regulatory Assets
Increase in annual base distribution rate					$ 27.0
Pennsylvania Public Utility Commission \| CPG
Regulatory Assets
DSIC, percent of amount billed to customers						0.00%
Pennsylvania Public Utility Commission \| CPG \| Subsequent Event
Regulatory Assets
DSIC, percent of amount billed to customers		7.50%
Pennsylvania Public Utility Commission \| Maximum
Regulatory Assets
DSIC, percent of amount billed to customers				5.00%				5.00%
Pennsylvania Public Utility Commission \| Maximum \| PNG
Regulatory Assets
DSIC, percent of amount billed to customers								10.00%
Pennsylvania Public Utility Commission \| Maximum \| CPG
Regulatory Assets
DSIC, percent of amount billed to customers								10.00%
Gas Utility
Regulatory Assets
Fair value of unrealized gains (losses)									$ (0.1)		$ 4.3	$ 5.5