CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) attributable to UGI Corporation	$ 678,000,000	$ 269,000,000	$ (1,502,000,000)
Adjustments to reconcile net income (loss) attributable to UGI Corporation to net cash provided by operating activities:
Depreciation and amortization	561,000,000	551,000,000	532,000,000
Deferred income tax expense (benefit), net	(46,000,000)	52,000,000	(420,000,000)
Provision for uncollectible accounts	37,000,000	61,000,000	69,000,000
Changes in unrealized gains and losses on derivative instruments	19,000,000	10,000,000	1,682,000,000
(Gain) loss on disposals of businesses	36,000,000	95,000,000	221,000,000
Impairment of assets	0	7,000,000	19,000,000
Impairment of goodwill	0	195,000,000	656,000,000
Equity-based compensation expense	18,000,000	8,000,000	17,000,000
Loss on extinguishments of debt	10,000,000	9,000,000	9,000,000
Loss (income) from equity investees	(5,000,000)	19,000,000	(2,000,000)
Settlement of Energy Services interest rate swap, net of amortization	0	(19,000,000)	19,000,000
Gain on sales of fixed assets	(25,000,000)	(22,000,000)	(61,000,000)
Other, net	(36,000,000)	(20,000,000)	19,000,000
Net change in:
Accounts receivable and accrued utility revenues	(35,000,000)	126,000,000	212,000,000
Income taxes receivable	15,000,000	(21,000,000)	91,000,000
Inventories	30,000,000	32,000,000	247,000,000
Utility deferred fuel costs, net of changes in unsettled derivatives	(47,000,000)	(7,000,000)	64,000,000
Accounts payable	(29,000,000)	(99,000,000)	(291,000,000)
Derivative instruments collateral deposits received (paid)	5,000,000	(9,000,000)	(420,000,000)
Other current assets	16,000,000	6,000,000	(36,000,000)
Other current liabilities	25,000,000	(61,000,000)	(18,000,000)
Net cash provided by operating activities	1,227,000,000	1,182,000,000	1,107,000,000
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(837,000,000)	(796,000,000)	(974,000,000)
Acquisitions of businesses and assets, net of cash and restricted cash acquired	0	0	(9,000,000)
Investments in equity method investees	(38,000,000)	(92,000,000)	(146,000,000)
Settlements of net investment hedges	(4,000,000)	3,000,000	22,000,000
Net proceeds from the disposition of businesses and assets	170,000,000	93,000,000	30,000,000
Other, net	10,000,000	0	0
Net cash provided (used) by investing activities	(699,000,000)	(792,000,000)	(1,077,000,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends on Common Stock	(322,000,000)	(318,000,000)	(308,000,000)
Issuances of debt, net of issuance costs	1,684,000,000	1,321,000,000	1,930,000,000
Repayments of long-term debt and finance leases, including redemption premiums	(1,774,000,000)	(1,303,000,000)	(2,031,000,000)
Short-term borrowings (repayments), net	21,000,000	(194,000,000)	267,000,000
Issuances of Common Stock	18,000,000	0	12,000,000
Repurchases of Common Stock	(33,000,000)	0	(22,000,000)
Payments on Purchase Contracts	0	(12,000,000)	(16,000,000)
Net cash provided (used) by financing activities	(406,000,000)	(506,000,000)	(168,000,000)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	5,000,000	4,000,000	9,000,000
Cash, cash equivalents and restricted cash increase (decrease)	127,000,000	(112,000,000)	(129,000,000)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Cash, cash equivalents and restricted cash at end of year	355,000,000	228,000,000	340,000,000
Cash, cash equivalents and restricted cash at beginning of year	228,000,000	340,000,000	469,000,000
Cash, cash equivalents and restricted cash increase (decrease)	127,000,000	(112,000,000)	(129,000,000)
Cash paid (received) for:
Interest	375,000,000	403,000,000	332,000,000
Income taxes	$ 55,000,000	$ 80,000,000	$ (17,000,000)