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Series Preferred Stock	12 Months Ended
Series Preferred Stock	Sep. 30, 2011
Series Preferred Stock [Abstract]
Series Preferred Stock	Note 12 — 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, 2011 or 2010. 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, 2011 and 2010, there were no shares of UGI Utilities Series Preferred Stock outstanding.