Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended					12 Months Ended
	Dec. 31, 2013 Environmental matters [Member]	Dec. 31, 2013 Environmental matters [Member] CPG MGP [Member]	Dec. 31, 2013 Environmental matters [Member] PNG MGP [Member]	Dec. 31, 2013 CPG and PNG COAs [Member] UGI Utilities [Member]	Dec. 31, 2012 CPG and PNG COAs [Member] UGI Utilities [Member]	Sep. 30, 2008 FTC Investigation [Member] Partnership [Member] lb
Commitments and Contingencies [Line Items]
Environmental expenditures cap during calendar year		$ 1.8	$ 1.1
Accrual for environmental loss contingencies				$ 16.9	$ 15.0
Base year for determination of investigation and remediation cost (in years)	5 years
Amount of propane in cylinders before reduction (in pounds)						17
Amount of propane in cylinders after reduction (in pounds)						15