Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Minimum future payments under operating leases
2014	$ 66.7
2015	53.5
2016	43.8
2017	33.2
2018	25.7
After 2018	58.2
AmeriGas Propane [Member]
Minimum future payments under operating leases
2014	51.0
2015	41.4
2016	33.7
2017	26.6
2018	21.7
After 2018	55.8
UGI Utilities [Member]
Minimum future payments under operating leases
2014	5.5
2015	4.7
2016	4.2
2017	2.7
2018	2.0
After 2018	1.3
UGI International [Member]
Minimum future payments under operating leases
2014	8.2
2015	5.8
2016	4.5
2017	3.3
2018	1.8
After 2018	1.0
Other Businesses [Member]
Minimum future payments under operating leases
2014	2.0
2015	1.6
2016	1.4
2017	0.6
2018	0.2
After 2018	0.1
Environmental Issue [Member] | CPG MGP [Member]
Commitments and Contingencies [Line Items]
Environmental Expenditures Cap During Calendar Year	0
Environmental Issue [Member] | PNG MGP [Member]
Commitments and Contingencies [Line Items]
Environmental Expenditures Cap During Calendar Year	$ 0