Debt Textual (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Maturities of Long-term Debt [Abstract]
Due in Fiscal 9/30/2013	$ 0
Due in Fiscal 9/30/2014	20,000
Due in Fiscal 9/30/2015	247,000
Due in Fiscal 9/30/2016	20,000
Due in Fiscal 9/30/2017	40,000
Debt Instrument [Line Items]
Long-term Debt	642,000	600,000
UGI Utilities 2011 Credit Agreement [Member]
Debt Instrument [Line Items]
Credit agreement	300,000
Borrowings outstanding, amount	17,500	9,200
Line of Credit Facility, Interest Rate at Period End	1.18%	1.21%
Credit agreement outstanding, amount	2,000	2,000
Letter of Credit [Member] \| UGI Utilities 2011 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit agreement sublimit for letters of credit	100,000
Minimum [Member] \| UGI Utilities 2011 Credit Agreement [Member]
Debt Instrument [Line Items]
Margin on term loan base rate borrowings	0.00%
Maximum [Member] \| UGI Utilities 2011 Credit Agreement [Member]
Debt Instrument [Line Items]
Margin on term loan base rate borrowings	2.00%
Term Loan Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt	175,000	0
Margin on term loan base rate borrowings	0.60%
Debt Instrument, Term	364 days
Senior Notes [Member] \| 6.375%, due September 2013 [Member]
Debt Instrument [Line Items]
Long-term Debt	0	108,000
Debt Instrument, Interest Rate, Stated Percentage	6.375%
Senior Notes [Member] \| Senior Notes due March 2044 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 175,000
Debt Instrument, Interest Rate, Stated Percentage	4.98%

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Margin on term loan base rate borrowings.

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Revolving credit agreement sublimit for letters of credit.

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Interest rate stated in the contractual debt agreement.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount borrowed under the credit facility as of the balance sheet date.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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-Paragraph 2, 4

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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