Debt (UGI Utilities) (Narrative) (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended			12 Months Ended				12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012 UGI Utilities 2011 Credit Agreement [Member]	Sep. 30, 2013 UGI Utilities 2011 Credit Agreement [Member]	Sep. 30, 2013 Letter of Credit [Member] UGI Utilities 2011 Credit Agreement [Member]	Sep. 30, 2013 Minimum [Member] UGI Utilities 2011 Credit Agreement [Member]	Sep. 30, 2013 Maximum [Member] UGI Utilities 2011 Credit Agreement [Member]	Sep. 30, 2013 UGI Utilities [Member]	Sep. 30, 2012 UGI Utilities [Member]	Sep. 30, 2013 UGI Utilities [Member] Term Loan Credit Agreement [Member]	Sep. 30, 2012 UGI Utilities [Member] Term Loan Credit Agreement [Member]	Sep. 30, 2013 UGI Utilities [Member] Senior Notes Due March 26, 2044 [Member]	Sep. 30, 2013 UGI Utilities [Member] Senior Notes Due September 2013 [Member]	Sep. 30, 2012 UGI Utilities [Member] Senior Notes Due September 2013 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 3,609.4	$ 3,514.3						$ 642.0	$ 600.0	$ 175.0	$ 0		$ 0	$ 108.0
Interest rate stated percentage												4.98%	6.375%
Debt instrument term										364 days
Debt Instrument, Basis Spread on Variable Rate										0.00%
Credit agreement				300
Revolving Credit Agreement Sublimit for Letters of Credit					100
Margin on Credit Agreement Base Rate Borrowings						0.00%	2.00%
Borrowings outstanding, amount			9.2	17.5
Line of Credit Facility, Interest Rate at Period End			1.21%	1.18%
Letters of Credit Outstanding, Amount			$ 2.0	$ 2.0
Ratio of consolidated debt to consolidated capital			0.65