Business Combinations (Tables)

12 Months Ended

Sep. 30, 2012

Business Combinations [Abstract]

Schedule of Purchase Price Allocation [Table Text Block]

	Allocation of Purchase Price
	Trade receivables, net	$	131.2
	Inventories		103.5
	Other current assets and (liabilities)(A)		(67.5)
	Plant and equipment		402.3
	Intangible assets		382.1
	Current portion of long-term debt and short-term borrowings		(70.8)
	Long-term debt		(279.8)
	Deferred income taxes		(133.7)
	Other noncurrent assets and (liabilities)		(9.6)
	Fair Value of Identifiable Net Assets Acquired	$	457.7
	Goodwill		620.8
	Noncontrolling interests (including redeemable noncontrolling interest)		(388.9)
	Total	$	689.6
(A)Includes cash and cash items, prepaid expenses, other current assets, payables and accrued liabilities, and other current liabilities.

Business Acquisition, Pro Forma Information [Table Text Block]

		Pro forma
Year Ended 30 September		2012		2011
Sales	$	9,952.3	$	10,144.2
Net income		1,039.0		1,181.9
Net income attributable to Air Products		1,008.6		1,137.5
Basic Earnings per Common Share attributable to Air Products		4.78		5.34
Diluted Earnings per Common Share attributable to Air Products		4.70		5.23