Common Stock and Equity Based Compensation - Common Stock Share Activity (Details) (UGI Corporation Common Stock)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Common Stock Share Activity
Shares, Issued	173,675,691	173,436,891	173,260,641
Shares, Outstanding	171,643,287	168,930,632	167,754,033
Stock Issued During Period, Shares, Share-based Compensation, Gross	94,950	238,800	176,250
Stock Issued And Outstanding During Period, Shares, Share-based Compensation, Gross	3,023,090	4,172,307	1,413,638
Stock Issued During Period, Shares, Dividend Reinvestment Plan		0	0
Stock Issued And Outstanding During Period, Shares, Dividend Reinvestment Plan		93,253	157,491
Stock Repurchased During Period, Shares	0
Stock Repurchased and Outstanding During Period, Shares	(1,227,654)
Stock Reacquired During Period, Shares, Share-based Compensation	0	0	0
Stock Reacquired And Outstanding During Period, Shares, Share-based Compensation	(1,164,942)	(1,552,905)	(394,530)
Shares, Issued	173,770,641	173,675,691	173,436,891
Shares, Outstanding	172,273,781	171,643,287	168,930,632
Treasury Stock
Common Stock Share Activity
Shares, Issued	2,032,404	4,506,259	5,506,608
Stock Issued During Period, Shares, Share-based Compensation, Gross	2,928,140	3,933,507	1,237,388
Stock Issued During Period, Shares, Dividend Reinvestment Plan		93,253	157,491
Stock Repurchased During Period, Shares	(1,227,654)
Stock Reacquired During Period, Shares, Share-based Compensation	(1,164,942)	(1,552,905)	(394,530)
Shares, Issued	1,496,860	2,032,404	4,506,259