CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (unaudited) - USD ($) $ in Millions	Total	Total UGI stockholders’ equity	Preferred stock, without par value	Preferred stock, without par value Cumulative effect of change in accounting	Common stock, without par value	Common stock, without par value Cumulative effect of change in accounting	Retained earnings	Retained earnings Cumulative effect of change in accounting	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interests
Balance, beginning of period at Sep. 30, 2022			$ 162	$ 5	$ 1,483	$ (6)	$ 4,841	$ 1	$ (380)	$ (40)	$ 8
Increase (Decrease) in Stockholders' Equity
Common Stock issued in connection with employee and director plans, net of tax withheld					6
Equity-based compensation expense					9
Losses on common stock transactions in connection with employee and director plans							(5)
Net income (loss) attributable to UGI Corporation	$ (844)						(844)
Cash dividends on UGI Common Stock ($0.375, $0.36, $0.75 and $0.72, respectively)							(151)
Net gains (losses) on derivative instruments	(12)								(12)
Reclassification of net gains on derivative instruments	(10)								(10)
Benefit plans	0
Foreign currency adjustments	161								161
Common Stock issued in connection with employee and director plans, net of tax withheld										7
Repurchases of UGI Common Stock										(22)
Other											1
Balance, end of period at Mar. 31, 2023	5,214	$ 5,205	167		1,492		3,842		(241)	(55)	9
Balance, beginning of period at Dec. 31, 2022			167		1,482		3,808		(231)	(46)	8
Increase (Decrease) in Stockholders' Equity
Common Stock issued in connection with employee and director plans, net of tax withheld					4
Equity-based compensation expense					6
Losses on common stock transactions in connection with employee and director plans							(1)
Net income (loss) attributable to UGI Corporation	110						110
Cash dividends on UGI Common Stock ($0.375, $0.36, $0.75 and $0.72, respectively)							(75)
Net gains (losses) on derivative instruments	(15)								(15)
Reclassification of net gains on derivative instruments	(5)								(5)
Benefit plans	0
Foreign currency adjustments	10								10
Common Stock issued in connection with employee and director plans, net of tax withheld										1
Repurchases of UGI Common Stock										(10)
Other											1
Balance, end of period at Mar. 31, 2023	5,214	5,205	167		1,492		3,842		(241)	(55)	9
Balance, beginning of period at Sep. 30, 2023	4,394		167		1,503		3,027		(256)	(55)	8
Increase (Decrease) in Stockholders' Equity
Equity-based compensation expense					2
Net income (loss) attributable to UGI Corporation	590						590
Cash dividends on UGI Common Stock ($0.375, $0.36, $0.75 and $0.72, respectively)							(157)
Net gains (losses) on derivative instruments	(3)								(3)
Reclassification of net gains on derivative instruments	(19)								(19)
Benefit plans	(1)								(1)
Foreign currency adjustments	25								25
Reacquired UGI Common Stock - employee and director plans										(1)
Other											1
Balance, end of period at Mar. 31, 2024	4,831	4,822	167		1,505		3,460		(254)	(56)	9
Balance, beginning of period at Dec. 31, 2023			167		1,501		3,042		(232)	(55)	9
Increase (Decrease) in Stockholders' Equity
Equity-based compensation expense					4
Net income (loss) attributable to UGI Corporation	496						496
Cash dividends on UGI Common Stock ($0.375, $0.36, $0.75 and $0.72, respectively)							(78)
Net gains (losses) on derivative instruments	12								12
Reclassification of net gains on derivative instruments	(9)								(9)
Benefit plans	(1)								(1)
Foreign currency adjustments	(24)								(24)
Reacquired UGI Common Stock - employee and director plans										(1)
Balance, end of period at Mar. 31, 2024	$ 4,831	$ 4,822	$ 167		$ 1,505		$ 3,460		$ (254)	$ (56)	$ 9