v3.10.0.1
Document and Entity Information
3 Months Ended
Dec. 31, 2018
shares
Document And Entity Information [Abstract]  
Document Type 10-Q
Document Period End Date Dec. 31, 2018
Amendment Flag false
Entity Registrant Name AIR PRODUCTS & CHEMICALS INC /DE/
Entity Central Index Key 0000002969
Current Fiscal Year End Date --09-30
Entity Filer Category Large Accelerated Filer
Document Fiscal Year Focus 2019
Document Fiscal Period Focus Q1
Entity Common Stock, Shares Outstanding 219,631,171
Entity Emerging Growth Company false
Entity Small Business false