CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (unaudited) - USD ($) $ in Millions	Total	Total UGI stockholders’ equity	Preferred stock, without par value	Common stock, without par value	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interests
Balance, beginning of period at Sep. 30, 2020			$ 0.0	$ 1,416.0	$ 2,908.0	$ (147.0)	$ (49.0)	$ 9.0
Increase (Decrease) in Stockholders' Equity
Common Stock issued in connection with employee and director plans, net of tax withheld				3.0
Equity-based compensation expense				9.0
Losses on common stock transactions in connection with employee and director plans					(5.0)
Net income attributable to UGI Corporation	$ 792.0				792.0
Cash dividends on UGI Common Stock ($0.345, $0.33, $0.69, and $0.66, respectively)					(138.0)
Net gains on derivative instruments	4.0					4.0
Reclassification of net losses on derivative instruments	9.0					9.0
Benefit plans	1.0					1.0
Foreign currency adjustments	7.0					7.0
Common Stock issued in connection with employee and director plans, net of tax withheld							10.0
Reacquired UGI Common Stock - employee and director plans							(1.0)
Net income including noncontrolling interests	792.0
Balance, end of period at Mar. 31, 2021	4,828.0	$ 4,819.0	0.0	1,428.0	3,557.0	(126.0)	(40.0)	9.0
Balance, beginning of period at Dec. 31, 2020			0.0	1,419.0	3,139.0	(79.0)	(42.0)	9.0
Increase (Decrease) in Stockholders' Equity
Common Stock issued in connection with employee and director plans, net of tax withheld				2.0
Equity-based compensation expense				7.0
Losses on common stock transactions in connection with employee and director plans					(2.0)
Net income attributable to UGI Corporation	489.0				489.0
Cash dividends on UGI Common Stock ($0.345, $0.33, $0.69, and $0.66, respectively)					(69.0)
Net gains on derivative instruments	4.0					4.0
Reclassification of net losses on derivative instruments	4.0					4.0
Benefit plans	1.0					1.0
Foreign currency adjustments	(56.0)					(56.0)
Common Stock issued in connection with employee and director plans, net of tax withheld							3.0
Reacquired UGI Common Stock - employee and director plans							(1.0)
Net income including noncontrolling interests	489.0
Balance, end of period at Mar. 31, 2021	4,828.0	4,819.0	0.0	1,428.0	3,557.0	(126.0)	(40.0)	9.0
Balance, beginning of period at Sep. 30, 2021	5,531.0		213.0	1,394.0	4,081.0	(140.0)	(26.0)	9.0
Increase (Decrease) in Stockholders' Equity
Other			(52.0)	53.0				(1.0)
Common Stock issued in connection with employee and director plans, net of tax withheld				8.0
Equity-based compensation expense				10.0
Losses on common stock transactions in connection with employee and director plans					(15.0)
Net income attributable to UGI Corporation	836.0				836.0
Cash dividends on UGI Common Stock ($0.345, $0.33, $0.69, and $0.66, respectively)					(145.0)
Net gains on derivative instruments	34.0					34.0
Reclassification of net losses on derivative instruments	10.0					10.0
Benefit plans	3.0					3.0
Foreign currency adjustments	(85.0)					(85.0)
Common Stock issued in connection with employee and director plans, net of tax withheld							30.0
Reacquired UGI Common Stock - employee and director plans							(9.0)
Net income including noncontrolling interests	838.0							2.0
Balance, end of period at Mar. 31, 2022	6,210.0	6,200.0	161.0	1,465.0	4,757.0	(178.0)	(5.0)	10.0
Balance, beginning of period at Dec. 31, 2021			214.0	1,402.0	3,908.0	(156.0)	(19.0)	10.0
Increase (Decrease) in Stockholders' Equity
Other			(53.0)	53.0				(1.0)
Common Stock issued in connection with employee and director plans, net of tax withheld				3.0
Equity-based compensation expense				7.0
Losses on common stock transactions in connection with employee and director plans					(11.0)
Net income attributable to UGI Corporation	933.0				933.0
Cash dividends on UGI Common Stock ($0.345, $0.33, $0.69, and $0.66, respectively)					(73.0)
Net gains on derivative instruments	24.0					24.0
Reclassification of net losses on derivative instruments	6.0					6.0
Benefit plans	1.0					1.0
Foreign currency adjustments	(53.0)					(53.0)
Common Stock issued in connection with employee and director plans, net of tax withheld							23.0
Reacquired UGI Common Stock - employee and director plans							(9.0)
Net income including noncontrolling interests	934.0							1.0
Balance, end of period at Mar. 31, 2022	$ 6,210.0	$ 6,200.0	$ 161.0	$ 1,465.0	$ 4,757.0	$ (178.0)	$ (5.0)	$ 10.0