Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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Segment Information - Reconciliation of Partnership Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions			$ 341	$ 185
Loss on extinguishment of debt	$ 0	$ 0	(11)	0
AmeriGas Propane
Segment Reporting Information [Line Items]
Loss on extinguishment of debt			0
AmeriGas Propane \| Revenues
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	0	0	0
AmeriGas Propane \| Cost of sales
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	32	27	(37)	64
AmeriGas Propane \| Operating and administrative expenses
Segment Reporting Information [Line Items]
Restructuring costs	(14)		(14)
Business transformation expenses		(14)		(26)
AmeriGas Propane \| Other non-operating income (expense), net
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	0	0	0	0
UGI International
Segment Reporting Information [Line Items]
Loss on extinguishment of debt			(11)
UGI International \| Revenues
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	2	0	5
UGI International \| Cost of sales
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	560	48	348	154
UGI International \| Operating and administrative expenses
Segment Reporting Information [Line Items]
Restructuring costs	(2)		(2)
Business transformation expenses		(3)		(6)
UGI International \| Other non-operating income (expense), net
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	(1)	15	5	(5)
Midstream & Marketing
Segment Reporting Information [Line Items]
Loss on extinguishment of debt			0
Midstream & Marketing \| Revenues
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	(9)	(2)	(2)
Midstream & Marketing \| Cost of sales
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	154	1	22	(28)
Midstream & Marketing \| Operating and administrative expenses
Segment Reporting Information [Line Items]
Restructuring costs	0		0
Business transformation expenses		0		0
Midstream & Marketing \| Other non-operating income (expense), net
Segment Reporting Information [Line Items]
Net gains (losses) on commodity derivative instruments not associated with current-period transactions	$ 0	$ 0	$ 0	$ 0