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 - ASU 2020-06 (Note 3)	Common stock, without par value	Common stock, without par value Cumulative effect of change in accounting - ASU 2020-06 (Note 3)	Retained earnings	Retained earnings Cumulative effect of change in accounting - ASU 2020-06 (Note 3)	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interests
Balance, beginning of period at Sep. 30, 2021			$ 213		$ 1,394		$ 4,081		$ (140)	$ (26)	$ 9
Increase (Decrease) in Stockholders' Equity
Other			(52)		53						(1)
Common Stock issued in connection with employee and director plans, net of tax withheld					8
Equity-based compensation expense					10
Losses on common stock transactions in connection with employee and director plans							(15)
Net income (loss) attributable to UGI Corporation	$ 836						836
Cash dividends on UGI Common Stock ($0.36, $0.345, $0.72 and $0.69, respectively)							(145)
Net (losses) gains on derivative instruments	34								34
Reclassification of net (gains) losses on derivative instruments	10								10
Benefit plans	3								3
Foreign currency adjustments	(85)								(85)
Common Stock issued in connection with employee and director plans, net of tax withheld										30
Reacquired UGI Common Stock - employee and director plans										(9)
Net income attributable to noncontrolling interests	838										2
Balance, end of period at Mar. 31, 2022	6,210	$ 6,200	161		1,465		4,757		(178)	(5)	10
Balance, beginning of period at Dec. 31, 2021			214		1,402		3,908		(156)	(19)	10
Increase (Decrease) in Stockholders' Equity
Other			(53)		53						(1)
Common Stock issued in connection with employee and director plans, net of tax withheld					3
Equity-based compensation expense					7
Losses on common stock transactions in connection with employee and director plans							(11)
Net income (loss) attributable to UGI Corporation	933						933
Cash dividends on UGI Common Stock ($0.36, $0.345, $0.72 and $0.69, respectively)							(73)
Net (losses) gains on derivative instruments	24								24
Reclassification of net (gains) losses on derivative instruments	6								6
Benefit plans	1								1
Foreign currency adjustments	(53)								(53)
Common Stock issued in connection with employee and director plans, net of tax withheld										23
Reacquired UGI Common Stock - employee and director plans										(9)
Net income attributable to noncontrolling interests	934										1
Balance, end of period at Mar. 31, 2022	6,210	6,200	161		1,465		4,757		(178)	(5)	10
Balance, beginning of period at Sep. 30, 2022	6,074		162	$ 5	1,483	$ (6)	4,841	$ 1	(380)	(40)	8
Increase (Decrease) in Stockholders' Equity
Other											1
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 ($0.36, $0.345, $0.72 and $0.69, respectively)							(151)
Net (losses) gains on derivative instruments	(12)								(12)
Reclassification of net (gains) losses 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)
Net income attributable to noncontrolling interests	(844)
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
Other											1
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 ($0.36, $0.345, $0.72 and $0.69, respectively)							(75)
Net (losses) gains on derivative instruments	(15)								(15)
Reclassification of net (gains) losses 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)
Net income attributable to noncontrolling interests	110
Balance, end of period at Mar. 31, 2023	$ 5,214	$ 5,205	$ 167		$ 1,492		$ 3,842		$ (241)	$ (55)	$ 9