XML 18 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Cover - USD ($)
$ in Billions
12 Months Ended
Sep. 30, 2020
Oct. 31, 2020
Mar. 31, 2020
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Sep. 30, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --09-30    
Entity Central Index Key 0000002969    
Amendment Flag false    
Entity File Number 001-04534    
Entity Registrant Name AIR PRODUCTS AND CHEMICALS, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 23-1274455    
Entity Address, Address Line One 7201 Hamilton Boulevard    
Entity Address, City or Town Allentown    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 18195-1501    
City Area Code 610    
Local Phone Number 481-4911    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 44.0
Entity Common Stock, Shares Outstanding   221,026,592  
Documents Incorporated by Reference Portions of the registrant’s definitive Proxy Statement for the Annual Meeting of Shareholders to be held on 28 January 2021 are incorporated by reference into Part III.    
Common Stock, par value, $1.00 per share      
Entity Information [Line Items]      
Title of 12(b) Security Common Stock, par value $1.00 per share    
Trading Symbol APD    
Security Exchange Name NYSE    
0.375% Euro Notes due 2021      
Entity Information [Line Items]      
Title of 12(b) Security 0.375% Euro Notes due 2021    
Trading Symbol APD21B    
Security Exchange Name NYSE    
1.000% Euro Notes due 2025      
Entity Information [Line Items]      
Title of 12(b) Security 1.000% Euro Notes due 2025    
Trading Symbol APD25    
Security Exchange Name NYSE    
0.500% Notes due 2028      
Entity Information [Line Items]      
Title of 12(b) Security 0.500% Euro Notes due 2028    
Trading Symbol APD28    
Security Exchange Name NYSE    
0.800% Notes due 2032      
Entity Information [Line Items]      
Title of 12(b) Security 0.800% Euro Notes due 2032    
Trading Symbol APD32    
Security Exchange Name NYSE