Document Entity Information	3 Months Ended
	Dec. 31, 2012
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	Dec. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	207,624,669