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Derivative Instruments and Hedging Activities (Details) € in Millions, $ in Millions		1 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 EUR (€)	Sep. 30, 2015 USD ($)
Derivative
Restricted Cash and Cash Equivalents, Current							$ 15.6		$ 69.3
Settlement of UGI Utilities interest rate agreements			$ 36.0	$ 0.0	$ 0.0
Amount of net losses associated with interest rate hedges to be reclassified with interest rate hedges during the next 12 months							(3.4)
Amount of net losses associated with currency rate risk to be reclassified into earnings during the next 12 months							11.5
Restricted cash in brokerage accounts							15.6		54.9
Amounts of derivative losses representing ineffectiveness			$ 5.5
UGI France
Derivative
Derivative interest rate floor		0.00%
Interest Rate Swap
Derivative
Notional amount | €						€ 645.8		€ 645.8
Interest Rate Swap | Interest Expense
Derivative
Loss on interest rate swaps				$ 9.0
Interest Rate Swap | UGI France
Derivative
Payment to interest rate swap counterparties | €		€ 7.7
Interest Rate Swap | UGI France | Term Loan
Derivative
Notional amount | €		€ 600.0						€ 600.0
Interest Rate Protection Agreements
Derivative
Notional amount							$ 0.0		$ 250.0
Interest Rate Protection Agreements | UGI Utilities
Derivative
Settlement of UGI Utilities interest rate agreements	$ 36.0
EURIBOR | Interest Rate Swap | UGI France
Derivative
Underlying fixed interest rate (percentage)		0.18%

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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Fixed interest rate related to the interest rate derivative.

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Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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Amount of gain (loss) from the ineffectiveness of the hedge.

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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

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The cash outflow for derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

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