v3.8.0.1
Document and Entity Information
6 Months Ended
Mar. 31, 2018
shares
Document And Entity Information [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Mar. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q2
Current Fiscal Year End Date --09-30
Entity Registrant Name AIR PRODUCTS & CHEMICALS INC /DE/
Entity Central Index Key 0000002969
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 219,193,653