| Document and Entity Information | Aug. 03, 2022 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | Archer-Daniels-Midland Co |
| Amendment Flag | false |
| Entity Central Index Key | 0000007084 |
| Document Type | 8-K |
| Document Period End Date | Aug. 03, 2022 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-44 |
| Entity Tax Identification Number | 41-0129150 |
| Entity Address, Address Line One | 77 West Wacker Drive |
| Entity Address, Address Line Two | 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, no par value |
| Trading Symbol | ADM |
| Security Exchange Name | NYSE |
| Deferrable Notes [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.000% Notes due 2025 |
| Security Exchange Name | NYSE |
