Business Separation	3 Months Ended
Dec. 31, 2015
Restructuring and Related Activities [Abstract]
Business Separation [Text Block]	3. MATERIALS TECHNOLOGIES SEPARATION On 16 September 2015, the Company announced its intention to separate its Materials Technologies business into an independent publicly traded company. Subsequent to the satisfaction of specific conditions, the separation will be accomplished by distribution to Air Products shareholders of all of the shares of common stock of Versum Materials, LLC, or Versum, a newly formed company which will hold the Materials Technologies business. Versum is currently a wholly owned subsidiary of the Company and will be converted from a limited liability company to a Delaware corporation (Versum Materials, Inc.) prior to the distribution. During the first quarter of 2016, we incurred legal and other advisory fees of $12.0 ($.06 per share) related to the intended separation. Since the announcement, we have incurred $19.5 in separation fees. These fees are reflected on the consolidated income statements as “Business separation costs.” The results of operations, financial condition, and cash flows of the Materials Technologies business will continue to be presented within our consolidated financial statements as continuing operations until the Board of Directors approves the final separation and the separation occurs, at which time we expect the financial presentation of the historical results of this business will be reflected as a discontinued operation.

3. MATERIALS TECHNOLOGIES SEPARATION

On 16 September 2015, the Company announced its intention to separate its Materials Technologies business into an independent publicly traded company. Subsequent to the satisfaction of specific conditions, the separation will be accomplished by distribution to Air Products shareholders of all of the shares of common stock of Versum Materials, LLC, or Versum, a newly formed company which will hold the Materials Technologies business. Versum is currently a wholly owned subsidiary of the Company and will be converted from a limited liability company to a Delaware corporation (Versum Materials, Inc.) prior to the distribution.

During the first quarter of 2016, we incurred legal and other advisory fees of $12.0 ($.06 per share) related to the intended separation. Since the announcement, we have incurred $19.5 in separation fees. These fees are reflected on the consolidated income statements as “Business separation costs.” The results of operations, financial condition, and cash flows of the Materials Technologies business will continue to be presented within our consolidated financial statements as continuing operations until the Board of Directors approves the final separation and the separation occurs, at which time we expect the financial presentation of the historical results of this business will be reflected as a discontinued operation.