| Cover Page Cover Page | Mar. 09, 2020 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Mar. 9, 2020 |
| Entity Registrant Name | The J. M. Smucker Company |
| Entity Incorporation, State or Country Code | OH |
| Entity File Number | 001-05111 |
| Entity Tax Identification Number | 34-0538550 |
| Entity Address, Address Line One | One Strawberry Lane |
| Entity Address, City or Town | Orrville, |
| Entity Address, State or Province | OH |
| Entity Address, Postal Zip Code | 44667-0280 |
| City Area Code | 330 |
| Local Phone Number | 682-3000 |
| Title of 12(b) Security | Common Shares, no par value |
| Trading Symbol | SJM |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000091419 |
| Amendment Flag | false |
