Consolidated Income Statements (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Consolidated Income Statements [Abstract]
Sales	$ 2,560.8	$ 2,545.5
Cost of sales	1,831.0	1,865.9
Selling and administrative	258.2	280.9
Research and development	35.4	33.5
Business restructuring and cost reduction actions	32.4	0
Gain on previously held equity interest	17.9	0
Other income (expense), net	8.3	20.4
Operating Income	430.0	385.6
Equity affiliates' income	43.1	38.2
Interest expense	29.1	33.3
Income from Continuing Operations before Taxes	444.0	390.5
Income tax provision	106.5	94.5
Income from Continuing Operations	337.5	296.0
Income (loss) from Discontinued Operations, net of tax	0	3.1
Net Income	337.5	299.1
Less: Net Income Attributable to Noncontrolling Interests	12.9	8.9
Net Income Attributable to Air Products	324.6	290.2
Net Income Attributable to Air Products
Income from continuing operations	324.6	287.1
Income (loss) from discontinued operations	0	3.1
Net Income Attributable to Air Products	$ 324.6	$ 290.2
Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations	$ 1.52	$ 1.36
Income (loss) from discontinued operations	$ 0	$ 0.01
Net Income Attributable to Air Products	$ 1.52	$ 1.37
Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations	$ 1.5	$ 1.34
Income (loss) from discontinued operations	$ 0	$ 0.01
Net Income Attributable to Air Products	$ 1.5	$ 1.35
Weighted Average Common Shares - Basic (in millions)	214.2	211.8
Weighted Average Common Shares - Diluted (in millions)	216.6	214.3
Dividends Declared Per Common Share - Cash	$ 0.77	$ 0.71