Document Entity Information	6 Months Ended
	Mar. 31, 2013
Document And Entity Information [Abstract]
Entity Registrant Name	AIR PRODUCTS & CHEMICALS INC /DE/
Entity Central Index Key	0000002969
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	208,330,698