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Utility Regulatory Assets and Liabilities and Regulatory Matters (Details) - USD ($) $ in Millions					1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2016	Apr. 01, 2016	Jan. 19, 2016	Apr. 01, 2015	Mar. 31, 2016	Mar. 31, 2016	Jun. 30, 2016	Sep. 30, 2014	Sep. 30, 2015	Jun. 30, 2015
UGI Utilities
Regulatory Assets
Capitalized project costs					$ 5.8	$ 5.8
Project costs expensed in prior periods						5.4
UGI Utilities | Pennsylvania Public Utility Commission
Regulatory Assets
Requested operating revenue increase			$ 58.6
Operating revenue increase	$ 27.0
Maximum period since petition to file a general rate filing							5 years
DSIC, percent of amount billed to customers								0.00%
UGI Utilities | Pennsylvania Public Utility Commission | Maximum
Regulatory Assets
DSIC, percent of amount billed to customers					5.00%		5.00%
UGI Utilities | Pennsylvania Public Utility Commission | PNG
Regulatory Assets
DSIC, percent of amount billed to customers				0.00%
UGI Utilities | Pennsylvania Public Utility Commission | PNG | Maximum
Regulatory Assets
DSIC, percent of amount billed to customers					10.00%
UGI Utilities | Pennsylvania Public Utility Commission | CPG
Regulatory Assets
DSIC, percent of amount billed to customers		0.00%
UGI Utilities | Pennsylvania Public Utility Commission | CPG | Maximum
Regulatory Assets
DSIC, percent of amount billed to customers					10.00%
UGI Utilities | Information Technology
Regulatory Assets
Associated increase to utility property, plant and equipment					$ 2.7	2.7
Gas Utility
Regulatory Assets
Fair value of unrealized gains (losses)	$ 5.5						$ 5.5		$ (3.3)	$ (0.7)
Electric Utility Electric Supply Contracts
Regulatory Assets
Fair value of unrealized gains (losses)									$ (0.5)	$ (1.4)
Deferred Project Costs | UGI Utilities
Regulatory Assets
Associated increases to utility regulatory assets					$ 3.1	$ 3.1

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Remaining balance of regulatory assets for which no return on investment during recovery is provided. In some cases, a regulator may permit an enterprise to include a cost that would be charged to expense by an unregulated enterprise as an allowable cost over a period of time by amortizing that cost for rate-making purposes, but the regulator does not include the unrecovered amount in the rate base.

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