Commitments and Contingencies (Details)	6 Months Ended	9 Months Ended
	Oct. 31, 2014 lawsuit	Jun. 30, 2016 USD ($) subsidiary lb	Jun. 30, 2015 USD ($)
Commitments and Contingencies
Class action lawsuits (more than) | lawsuit	35
Amount of propane in cylinders before reduction (in pounds) | lb		17
Amount of propane in cylinders after reduction (in pounds) | lb		15
UGI Utilities | Environmental Matters
Commitments and Contingencies
Base year for determination of investigation and remediation cost (in years)		5 years
UGI Utilities | CPG and PNG COAs
Commitments and Contingencies
Accrual for environmental loss contingencies		$ 12,200,000	$ 9,600,000
CPG MGP | Environmental Matters
Commitments and Contingencies
Environmental expenditures cap during calendar year		$ 1,750,000.00
PNG MGP
Commitments and Contingencies
Loss contingency, settlement agreement, terms		2 years
PNG MGP | Environmental Matters
Commitments and Contingencies
Environmental expenditures cap during calendar year		$ 1,100,000.0
UGI Gas MGP Properties | Environmental Matters
Commitments and Contingencies
Expected environmental expenditures cap during calendar year		2,500,000
UGI Gas-COA | UGI Utilities
Commitments and Contingencies
Accrual for environmental loss contingencies		$ 43,800,000
PNG and CPG | UGI Utilities
Commitments and Contingencies
Number of subsidiaries acquired with similar histories | subsidiary		2