Dispositions and Acquisition	6 Months Ended
Dispositions and Acquisition	Mar. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Dispositions and Acquisition	Note 5 — Dispositions and Acquisition UGI International Energy Marketing Businesses Sale of U.K. Energy Marketing Business. On October 21, 2022, UGI International, through a wholly-owned subsidiary, sold its natural gas marketing business located in the U.K. for a net cash payment of $19 which includes certain working capital adjustments. In conjunction with the sale, during the first quarter of Fiscal 2023, the Company recorded a pre-tax loss of $215 ($151 after-tax) substantially all of which loss was due to the non-cash transfer of commodity derivative instruments associated with the business. At the date of closing of the sale, these commodity derivative instruments had a net carrying value of $206 which is attributable to net unrealized gains on such instruments. At September 30, 2022, these derivative instruments were classified as held for sale assets on the Condensed Consolidated Balance Sheet and a net carrying value of $276. The change in the carrying value of these derivative instruments between September 30, 2022 and October 21, 2022 resulted from changes in their fair values during that period. Other UGI International Energy Marketing Businesses. In November 2022, the Company announced that it expected to sign a definitive agreement during the first quarter of Fiscal 2023 to sell its energy marketing business in France. In December 2022, the Company announced that it no longer expected to sign a definitive agreement during the first quarter of Fiscal 2023 as extended negotiations with the potential buyer had been discontinued. The Company continues to pursue the sale of its energy marketing business in France, as well as the wind-down of its energy marketing business located in Belgium and the Netherlands. At March 31, 2023, the sale of our energy marketing business in France was not considered probable of occurring within one year and, as such, assets and liabilities associated with this business were not classified as held for sale on the Condensed Consolidated Balance Sheet. During the first quarter of Fiscal 2023, the Company recorded a $19 pre-tax impairment charge to reduce the carrying values of certain assets associated with its energy marketing business in the Netherlands, comprising property, plant and equipment and intangible assets. The impairment charge is reflected in “Operating and administrative expenses” on the Condensed Consolidated Statement of Income and included in the UGI International segment. Acquisitions of Assets Stonehenge. On January 27, 2022, UGI, through Energy Services, completed the Stonehenge Acquisition in which Energy Services acquired all of the equity interests in Stonehenge for total cash consideration of approximately $190. The Stonehenge business includes a natural gas gathering system, located in western Pennsylvania, with more than 47 miles of pipeline and associated compression assets. The Stonehenge Acquisition is consistent with our growth strategies, including expanding our midstream natural gas gathering assets within the Appalachian basin production region. The Stonehenge Acquisition was funded using available cash. This transaction has been accounted for as an acquisition of assets, and the purchase price has been primarily allocated to property, plant and equipment. We refer to Stonehenge and its assets as “UGI Moraine East.”