Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income including noncontrolling interests	$ 523.8	$ 488.8	$ 414.0
Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities:
Depreciation and amortization	416.3	400.9	374.1
Deferred income taxes, net	110.1	77.4	13.7
Provision for uncollectible accounts	30.7	21.7	31.6
Changes in unrealized (gains) losses on derivative instruments	(82.0)	(91.6)	119.1
Equity-based compensation expense	19.3	23.8	29.2
Loss on extinguishments of debt	59.7	48.9	0.0
Settlement of UGI Utilities interest rate protection agreements	0.0	(36.0)	0.0
Loss on private equity partnership investment	11.0	0.0	0.0
Other, net	44.1	(7.3)	(9.7)
Net change in:
Accounts receivable and accrued utility revenues	(103.6)	37.3	163.3
Inventories	(64.7)	29.4	181.4
Utility deferred fuel costs, net of changes in unsettled derivatives	(15.4)	(22.7)	51.8
Accounts payable	49.9	(40.0)	(134.9)
Other current assets	(37.5)	(8.6)	(25.6)
Other current liabilities	2.7	47.7	(44.2)
Net cash provided by operating activities	964.4	969.7	1,163.8
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(638.9)	(563.8)	(490.6)
Acquisitions of businesses, net of cash acquired	(101.6)	(61.2)	(447.5)
Decrease (increase) in restricted cash	6.1	53.7	(52.8)
Other, net	(29.0)	12.7	14.6
Net cash used by investing activities	(763.4)	(558.6)	(976.3)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends on UGI Common Stock	(168.9)	(160.7)	(153.5)
Distributions on AmeriGas Partners publicly held Common Units	(261.6)	(257.3)	(248.9)
Issuances of debt, net of issuance costs	1,307.1	1,629.5	660.3
Repayments of debt, including redemption premiums	(1,064.8)	(1,569.9)	(429.4)
Receivables Facility net borrowings	13.5	6.0	12.0
Increase (decrease) in short-term borrowings	61.2	95.7	(31.9)
Issuances of UGI Common Stock	11.0	13.7	11.9
Repurchases of UGI Common Stock	(43.3)	(47.6)	(34.1)
Other	(0.8)	15.5	(3.5)
Net cash used by financing activities	(146.6)	(275.1)	(217.1)
Effect of exchange rate changes on cash and cash equivalents	1.2	(2.9)	(20.2)
Cash and cash equivalents increase (decrease)	55.6	133.1	(49.8)
CASH AND CASH EQUIVALENTS
End of year	558.4	502.8	369.7
Beginning of year	502.8	369.7	419.5
Increase (decrease)	55.6	133.1	(49.8)
Cash paid for:
Interest	202.1	228.9	227.0
Income taxes	$ 98.0	$ 134.5	$ 173.1