Business and Asset Actions	6 Months Ended
	Mar. 31, 2023
Restructuring and Related Activities [Abstract]
Business and Asset Actions	BUSINESS AND ASSET ACTIONSOur consolidated income statements for the three and six months ended 31 March 2023 reflect "Business and asset actions" of $185.6 ($153.7 attributable to Air Products after tax) that resulted from a noncash write-off of assets previously under construction in our Asia and Europe segments. In March 2023, we confirmed our decision to withdraw from coal gasification in Indonesia in order to focus our resources on other opportunities. Additionally, we permanently suspended construction of a plant in Ukraine due to ongoing uncertainty related to Russia's invasion of the country. The charge for these actions was not recorded in segment results.