Inventories (Details) (USD $) In Thousands, unless otherwise specified					0 Months Ended					0 Months Ended
	Sep. 30, 2014 ft3	Sep. 30, 2013 ft3	Sep. 30, 2014 SCAAs storage_agreement	Sep. 30, 2014 SCAAs UGI Energy Services, Inc storage_agreement	Sep. 30, 2014 SCAAs UGI Energy Services, Inc Minimum	Sep. 30, 2014 SCAAs UGI Energy Services, Inc Maximum	Sep. 30, 2014 SCAAs Third Party storage_agreement	Sep. 30, 2014 Other Current Liabilities SCAAs	Sep. 30, 2013 Other Current Liabilities SCAAs	Nov. 01, 2014 Subsequent Event SCAAs UGI Energy Services, Inc	Nov. 01, 2014 Subsequent Event SCAAs UGI Energy Services, Inc storage_agreement
Public Utilities, Inventory
Number of storage agreements			4	3			1				1
Storage agreement, term (in years)					1 year	3 years				1 year
Volume of gas storage inventories released under SCAAs with non-affiliates (In Cubic Feet)	11,600,000,000	11,000,000,000
Carrying value of gas storage inventories released under SCAAs with non-affiliates	$ 49,897	$ 44,366
Security Deposit Liability								$ 17,600	$ 16,500