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Employee Retirement Plans (Tables)

12 Months Ended

Sep. 30, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Change in Pension Benefits and Other Postretirement Benefits Obligations

The following table provides a reconciliation of the projected benefit obligations (“PBOs”) of the U.S. Pension Plan and the UGI France pension plans, the accumulated benefit obligations (“ABOs”) of our other postretirement benefit plans, plan assets, and the funded status of pension and other postretirement plans as of September 30, 2016 and 2015. ABO is the present value of benefits earned to date with benefits based upon current compensation levels. PBO is ABO increased to reflect estimated future compensation.

	Pension Benefits								Other Postretirement Benefits
	2016				2015				2016				2015
Change in benefit obligations:
Benefit obligations — beginning of year	$	614.7			$	573.6			$	25.4			$	21.3
Service cost	10.1				10.0				0.7				0.7
Interest cost	26.8				25.5				0.9				0.8
Actuarial loss (gain)	83.3				14.4				6.6				(2.7		)
Plan amendments	—				(0.6		)		(1.5		)		—
Curtailment	(1.4		)		(0.8		)		(0.3		)		—
Totalgaz acquisition	—				21.3				—				6.8
Foreign currency	0.1				(4.4		)		—				(0.7		)
Benefits paid	(25.9		)		(24.3		)		(0.9		)		(0.8		)
Benefit obligations — end of year	$	707.7			$	614.7			$	30.9			$	25.4
Change in plan assets:
Fair value of plan assets — beginning of year	$	453.8			$	459.4			$	12.5			$	12.8
Actual gain (loss) on plan assets	53.4				1.1				1.3				(0.1		)
Foreign currency	0.1				(0.4		)		—				—
Employer contributions	11.4				11.9				0.6				0.6
Totalgaz acquisition	—				6.1				—				—
Benefits paid	(25.0		)		(24.3		)		(0.7		)		(0.8		)
Fair value of plan assets — end of year	$	493.7			$	453.8			$	13.7			$	12.5
Funded status of the plans — end of year	$	(214.0	)		$	(160.9	)		$	(17.2	)		$	(12.9	)
Assets (liabilities) recorded in the balance sheet:
Assets in excess of liabilities — included in other noncurrent assets	$	—			$	—			$	4.1			$	4.0
Unfunded liabilities — included in other noncurrent liabilities	(214.0		)		(160.9		)		(21.3		)		(16.9		)
Net amount recognized	$	(214.0	)		$	(160.9	)		$	(17.2	)		$	(12.9	)
Amounts recorded in UGI Corporation stockholders’ equity (pre-tax):
Prior service credit	$	(0.6	)		$	(0.6	)		$	(1.5	)		$	(0.1	)
Net actuarial loss	31.4				22.5				3.8				0.7
Total	$	30.8			$	21.9			$	2.3			$	0.6
Amounts recorded in regulatory assets and liabilities (pre-tax):
Prior service cost (credit)	$	1.2			$	1.6			$	(2.2	)		$	(2.9	)
Net actuarial loss	181.0				138.4				2.4				2.3
Total	$	182.2			$	140.0			$	0.2			$	(0.6	)

Actuarial Assumptions for Domestic Plans

The expected rate of return on assets assumption is based on current and expected asset allocations as well as historical and expected returns on various categories of plan assets (as further described below).

	Pension Plan										Other Postretirement Benefits
	2016			2015			2014				2016			2015			2014
Weighted-average assumptions:
Discount rate - benefit obligations	3.80	%		4.60	%		4.60	%			3.80	%		4.70	%		4.60	%
Discount rate - benefit cost	4.60	%		4.60	%		5.20	%			4.70	%		4.60	%		5.10% - 5.40%
Expected return on plan assets	7.55	%		7.75	%		7.75	%			5.00	%		5.00	%		5.00	%
Rate of increase in salary levels	3.25	%		3.25	%		3.25	%			3.25	%		3.25	%		3.25	%

Net Periodic Pension Expense and Other Postretirement Benefit Costs

Net periodic pension expense and other postretirement benefit cost includes the following components:

	Pension Benefits												Other Postretirement Benefits
	2016				2015				2014				2016				2015				2014
Service cost	$	10.1			$	10.0			$	9.4			$	0.7			$	0.7			$	0.5
Interest cost	26.8				25.5				26.1				0.9				0.8				0.9
Expected return on assets	(32.4		)		(32.2		)		(29.7		)		(0.6		)		(0.6		)		(0.6		)
Curtailment gain	(1.2		)		(0.8		)		—				—				—				—
Amortization of:
Prior service cost (benefit)	0.3				0.3				0.3				(0.6		)		(0.5		)		(0.5		)
Actuarial loss	10.9				10.0				7.7				—				0.1				—
Net benefit cost	14.5				12.8				13.8				0.4				0.5				0.3
Change in associated regulatory liabilities	—				—				—				1.0				3.7				3.7
Net benefit cost after change in regulatory liabilities	$	14.5			$	12.8			$	13.8			$	1.4			$	4.2			$	4.0

Expected Payments for Pension Benefits and Other Postretirement Welfare Benefits

Expected payments for pension and other postretirement welfare benefits are as follows:

	Pension Benefits				Other Postretirement Benefits
Fiscal 2017	$	28.7			$	1.1
Fiscal 2018	$	28.7			$	1.1
Fiscal 2019	$	30.0			$	1.1
Fiscal 2020	$	36.3			$	1.1
Fiscal 2021	$	39.5			$	1.1
Fiscal 2022 - 2026	$	189.1			$	5.5

Schedule of Health Care Cost Trend Rates

The assumed domestic health care cost trend rates at September 30 are as follows:

	2016			2015
Health care cost trend rate assumed for next year	7.25	%		7.5	%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	5.0	%		5.0	%
Fiscal year that the rate reaches the ultimate trend rate	2026			2026

Pension Plans

The targets, target ranges and actual allocations for the U.S. Pension Plan and VEBA trust assets at September 30 are as follows:

U.S. Pension Plan

	Actual						Target Asset Allocation			Permitted Range
	2016			2015
Equity investments:
Domestic	54.1	%		56.2	%		52.5	%		40.0% - 65.0%
International	10.2	%		10.2	%		12.5	%		7.5% - 17.5%
Total	64.3	%		66.4	%		65.0	%		60.0% - 70.0%
Fixed income funds & cash equivalents	35.7	%		33.6	%		35.0	%		30.0% - 40.0%
Total	100.0	%		100.0	%		100.0	%

VEBA

	Actual						Target Asset Allocation			Permitted Range
	2016			2015
Domestic equity investments	69.9	%		67.4	%		65.0	%		60.0% - 70.0%
Fixed income funds & cash equivalents	30.1	%		32.6	%		35.0	%		30.0% - 40.0%
Total	100.0	%		100.0	%		100.0	%

Fair Value of U.S. Pension Plan and VEBA Trust Assets

The fair values of the U.S. Pension Plan and VEBA trust assets by asset class and level within the fair value hierarchy, as described in Note 2, as of September 30, 2016 and 2015 are as follows:

	U.S. Pension Plan
	Level 1				Level 2				Level 3				Total
September 30, 2016:
Domestic equity investments:
S&P 500 Index equity mutual funds	$	158.9			$	—			$	—			$	158.9
Small and midcap equity mutual funds	43.2				—				—				43.2
Smallcap common stocks	11.4				—				—				11.4
UGI Corporation Common Stock	37.0				—				—				37.0
Total domestic equity investments	250.5				—				—				250.5
International index equity mutual funds	47.3				—				—				47.3
Fixed income investments:
Bond index mutual funds	147.8				—				—				147.8
Cash equivalents	—				17.8				—				17.8
Total fixed income investments	147.8				17.8				—				165.6
Total	$	445.6			$	17.8			$	—			$	463.4
September 30, 2015:
Domestic equity investments:
S&P 500 Index equity mutual funds	$	147.3			$	—			$	—			$	147.3
Small and midcap equity mutual funds	40.6				—				—				40.6
Smallcap common stocks	10.7				—				—				10.7
UGI Corporation Common Stock	43.4				—				—				43.4
Total domestic equity investments	242.0				—				—				242.0
International index equity mutual funds	43.9				—				—				43.9
Fixed income investments:
Bond index mutual funds	140.8				—				—				140.8
Cash equivalents	—				4.1				—				4.1
Total fixed income investments	140.8				4.1				—				144.9
Total	$	426.7			$	4.1			$	—			$	430.8

	VEBA
	Level 1				Level 2				Level 3				Total
September 30, 2016:
S&P 500 Index equity mutual fund	$	9.6			$	—			$	—			$	9.6
Bond index mutual fund	4.0				—				—				4.0
Cash equivalents	—				0.1				—				0.1
Total	$	13.6			$	0.1			$	—			$	13.7
September 30, 2015:
S&P 500 Index equity mutual fund	$	8.4			$	—			$	—			$	8.4
Bond index mutual fund	3.8				—				—				3.8
Cash equivalents	—				0.3				—				0.3
Total	$	12.2			$	0.3			$	—			$	12.5

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