Consolidated Income Statements (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Income Statements [Abstract]
Sales	$ 2,634.6	$ 2,547.3	$ 7,762.0	$ 7,593.9
Cost of sales	1,918.7	1,875.5	5,702.2	5,589.2
Selling and administrative	272.0	271.3	816.3	806.1
Research and development	33.8	33.5	100.5	99.1
Other income (expense), net	3.7	16.1	41.1	45.7
Operating Income	413.8	383.1	1,184.1	1,145.2
Equity affiliates' income	43.1	44.2	111.7	125.4
Interest expense	31.3	35.4	96.1	106.4
Income from Continuing Operations before Taxes	425.6	391.9	1,199.7	1,164.2
Income tax provision	102.1	94.1	288.7	282.1
Income from Continuing Operations	323.5	297.8	911.0	882.1
Income from Discontinued Operations, net of tax	0	0.6	3.1	3.1
Net Income	323.5	298.4	914.1	885.2
Less: Net Income Attributable to Noncontrolling Interests	9.5	10.0	26.4	28.1
Net Income Attributable to Air Products	314.0	288.4	887.7	857.1
Net Income Attributable to Air Products
Income from continuing operations	314.0	287.8	884.6	854.0
Income from discontinued operations	0	0.6	3.1	3.1
Net Income Attributable to Air Products	$ 314.0	$ 288.4	$ 887.7	$ 857.1
Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations	$ 1.47	$ 1.38	$ 4.17	$ 4.08
Income from discontinued operations	$ 0	$ 0	$ 0.01	$ 0.02
Net Income Attributable to Air Products	$ 1.47	$ 1.38	$ 4.18	$ 4.1
Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations	$ 1.46	$ 1.36	$ 4.12	$ 4.03
Income from discontinued operations	$ 0	$ 0	$ 0.01	$ 0.01
Net Income Attributable to Air Products	$ 1.46	$ 1.36	$ 4.13	$ 4.04
Weighted Average Common Shares - Basic (in millions)	212.9	209.4	212.4	209.3
Weighted Average Common Shares - Diluted (in millions)	215.4	211.9	214.9	211.9
Dividends Declared Per Common Share - Cash	$ 0.77	$ 0.71	$ 2.25	$ 2.06