Consolidated Income Statements - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Consolidated Income Statements [Abstract]
Sales	$ 2,470.2	$ 2,634.6	$ 7,445.5	$ 7,762.0
Cost of sales	1,716.4	1,918.7	5,247.0	5,702.2
Selling and administrative	242.2	272.0	741.3	816.3
Research and development	33.8	33.8	105.5	100.5
Business restructuring and cost reduction actions	58.2	0.0	146.0	0.0
Pension settlement loss	1.6	0.0	14.2	0.0
Gain on previously held equity interest	0.0	0.0	17.9	0.0
Other income (expense), net	4.5	3.7	17.5	41.1
Operating Income	422.5	413.8	1,226.9	1,184.1
Equity affiliates' income	42.4	43.1	118.5	111.7
Interest expense	28.2	31.3	80.7	96.1
Income from Continuing Operations before Taxes	436.7	425.6	1,264.7	1,199.7
Income tax provision	103.5	102.1	297.1	288.7
Income from Continuing Operations	333.2	323.5	967.6	911.0
Income (loss) from Discontinued Operations, net of tax	0.0	0.0	0.0	3.1
Net Income	333.2	323.5	967.6	914.1
Less: Net Income Attributable to Noncontrolling Interests	14.4	9.5	34.2	26.4
Net Income Attributable to Air Products	318.8	314.0	933.4	887.7
Net Income Attributable to Air Products
Income from continuing operations	318.8	314.0	933.4	884.6
Income (loss) from discontinued operations	0.0	0.0	0.0	3.1
Net Income Attributable to Air Products	$ 318.8	$ 314.0	$ 933.4	$ 887.7
Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations	$ 1.48	$ 1.47	$ 4.35	$ 4.17
Income (loss) from discontinued operations	0	0	0	0.01
Net Income Attributable to Air Products	1.48	1.47	4.35	4.18
Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations	1.47	1.46	4.3	4.12
Income (loss) from discontinued operations	0	0	0	0.01
Net Income Attributable to Air Products	$ 1.47	$ 1.46	$ 4.3	$ 4.13
Weighted Average Common Shares - Basic (in millions)	215.2	212.9	214.8	212.4
Weighted Average Common Shares - Diluted (in millions)	217.4	215.4	217.2	214.9
Dividends Declared Per Common Share - Cash	$ 0.81	$ 0.77	$ 2.39	$ 2.25