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					2
Equity-based compensation (income) expense					3
Losses on common stock transactions in connection with employee and director plans							(4)
Net income (loss) attributable to UGI Corporation	$ (954)						(954)
Cash dividends on UGI Common Stock ($0.375 and $0.36, respectively)							(76)
Net (losses) gains on derivative instruments	3								3
Reclassification of net gains on derivative instruments	(5)								(5)
Foreign currency adjustments	151								151
Common Stock issued in connection with employee and director plans, net of tax withheld										6
Repurchases of UGI Common Stock										(12)
Net income attributable to noncontrolling interests	(954)
Balance, end of period at Dec. 31, 2022	5,188	$ 5,180	167		1,482		3,808		(231)	(46)	8
Balance, beginning of period at Sep. 30, 2023	4,394		167		1,503		3,027		(256)	(55)	8
Increase (Decrease) in Stockholders' Equity
Other											1
Equity-based compensation (income) expense					(2)
Net income (loss) attributable to UGI Corporation	94						94
Cash dividends on UGI Common Stock ($0.375 and $0.36, respectively)							(79)
Net (losses) gains on derivative instruments	(15)								(15)
Reclassification of net gains on derivative instruments	(10)								(10)
Foreign currency adjustments	49								49
Net income attributable to noncontrolling interests	94
Balance, end of period at Dec. 31, 2023	$ 4,432	$ 4,423	$ 167		$ 1,501		$ 3,042		$ (232)	$ (55)	$ 9