Partnership Acquisition of Heritage Propane (Details 1) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Partnership unaudited consolidated results of operations
Net income attributable to UGI Corporation	$ 14.7	$ (6.3)	$ 289.2	$ 214.1
Earnings Per Share, Basic	$ 0.13	$ (0.06)	$ 2.54	$ 1.90
Earnings per common share attributable to UGI Corporation stockholders:
Earnings Per Share, Diluted	$ 0.13	$ (0.06)	$ 2.51	$ 1.89
Heritage Propane [Member]
Heritage Acquisition [Line Items]
Revenues			5,932.6
Partnership unaudited consolidated results of operations
Revenues				5,885.2
Net income attributable to UGI Corporation			289.2
Net income attributable to UGI Corporation				$ 211.4
Earnings Per Share, Basic			$ 2.54
Earnings per common share attributable to UGI Corporation stockholders:
Basic (in dollars per share)				$ 1.88
Earnings Per Share, Diluted			$ 2.51
Diluted (in dollars per share)				$ 1.87