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Series Preferred Stock	12 Months Ended
Series Preferred Stock	Sep. 30, 2012
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Series Preferred Stock	Series Preferred Stock UGI has 10,000,000 shares of UGI Series Preferred Stock authorized for issuance, including both series subject to and series not subject to mandatory redemption. We had no shares of UGI Series Preferred Stock outstanding at September 30, 2012 or 2011. UGI Utilities has 2,000,000 shares of UGI Utilities Series Preferred Stock authorized for issuance, including both series subject to and series not subject to mandatory redemption. At September 30, 2012 and 2011, there were no shares of UGI Utilities Series Preferred Stock outstanding.