Cover Page - shares	9 Months Ended
	Sep. 30, 2021	Oct. 25, 2021
Class of Stock [Line Items]
Entity Central Index Key	0000007084
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-44
Entity Registrant Name	ARCHER-DANIELS-MIDLAND CO
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-0129150
Entity Address, Address Line One	77 West Wacker Drive, Suite 4600
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60601
City Area Code	312
Local Phone Number	634-8100
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		559,441,260
Debt Securities [Member]
Class of Stock [Line Items]
Title of 12(b) Security	1.000% Notes due 2025
Security Exchange Name	NYSE
No Trading Symbol Flag	true
Common Stock [Member]
Class of Stock [Line Items]
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	ADM
Security Exchange Name	NYSE