Amount of propane in cylinders being sold.

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Base year for determination of investigation and remediation cost.

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Contract Terms, Subject to Annual Price And Quantity Adjustments

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Long-term Purchase Commitments, Time Period

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Reduced amount of propane in cylinders being sold.

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Reversal of competition authority matter accrual.

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

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Commitments and Contingencies (Details Textual) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended										12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2013 Gas Utility [Member]	Sep. 30, 2013 Midstream and Marketing [Member]	Sep. 30, 2013 Partnership [Member]	Sep. 30, 2008 Partnership [Member] lb	Sep. 30, 2013 CPG MGP Properties [Member]	Sep. 30, 2013 PNG MGP Properties [Member]	Dec. 31, 2010 Antargaz Competition Authority [Member]	Sep. 30, 2013 Environmental Issue [Member]	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Sep. 30, 2013 Maximum [Member] UGI International [Member] Partnership [Member]
Commitments and Contingencies [Line Items]
Aggregate rental expense for leases	$ 82.5	$ 77.9	$ 69.8
Term of contracts				1 year	2 years	3 years								3 years
Contract Terms, Subject to Annual Price And Quantity Adjustments (in years)												1 year	3 years
Environmental expenditures								1.8	1.1
Accrued liabilities for environmental investigation and remediation costs related to CPG-COA and PNG-COA	14.0	15.0
Base Year for Determination of Investigation and Remediation Cost (in years)											5 years
Amount of propane in cylinders being sold							17
Reduced amount of propane in cylinders being sold							15
Reversal of Competition Authority Matter Accrual										$ 9.4