Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Minimum future payments under operating leases
2013	$ 77.4
2014	60.4
2015	47.5
2016	37.1
2017	27.6
After 2017	68.6
AmeriGas Propane [Member]
Minimum future payments under operating leases
2013	62.0
2014	48.8
2015	39.4
2016	30.3
2017	23.1
After 2017	63.9
UGI Utilities [Member]
Minimum future payments under operating leases
2013	5.4
2014	4.3
2015	3.4
2016	3.1
2017	1.8
After 2017	2.3
International Propane [Member]
Minimum future payments under operating leases
2013	8.0
2014	5.6
2015	3.4
2016	2.6
2017	2.4
After 2017	2.3
Other Businesses [Member]
Minimum future payments under operating leases
2013	2.0
2014	1.7
2015	1.3
2016	1.1
2017	0.3
After 2017	$ 0.1