Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

Changes in the carrying amount of goodwill by reportable segment are as follows:

	AmeriGas Propane			UGI International			Midstream & Marketing		UGI Utilities		Total
Balance September 30, 2016	$	1,978.3		$	817.0		$	11.6	$	182.1	$	2,989.0
Acquisitions	23.0			55.5			—		—		78.5
Purchase accounting adjustments	—			(1.7		)	—		—		(1.7		)
Foreign currency translation	—			41.4			—		—		41.4
Balance September 30, 2017	2,001.3			912.2			11.6		182.1		3,107.2
Acquisitions	4.5			54.9			—		—		59.4
Dispositions	(2.8		)	—			—		—		(2.8		)
Purchase accounting adjustments	—			13.6			—		—		13.6
Foreign currency translation	—			(17.0		)	—		—		(17.0		)
Balance September 30, 2018	$	2,003.0		$	963.7		$	11.6	$	182.1	$	3,160.4

Schedule of Finite-Lived Intangible Assets

Intangible assets comprise the following at September 30:

	2018			2017
Customer relationships, noncompete agreements and other (subject to amortization)	$	848.6		$	817.8
Trademarks and tradenames (subject to amortization)	7.9			—
Trademarks and tradenames (not subject to amortization)	50.3			134.1
Gross carrying amount	906.8			951.9
Accumulated amortization	(393.2		)	(340.2		)
Intangible assets, net	$	513.6		$	611.7

Schedule of Indefinite-Lived Intangible Assets

Intangible assets comprise the following at September 30:

	2018			2017
Customer relationships, noncompete agreements and other (subject to amortization)	$	848.6		$	817.8
Trademarks and tradenames (subject to amortization)	7.9			—
Trademarks and tradenames (not subject to amortization)	50.3			134.1
Gross carrying amount	906.8			951.9
Accumulated amortization	(393.2		)	(340.2		)
Intangible assets, net	$	513.6		$	611.7