| Document and Entity Information | May 26, 2023 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | BROWN FORMAN CORP |
| Amendment Flag | false |
| Entity Central Index Key | 0000014693 |
| Document Type | 8-K |
| Document Period End Date | May 26, 2023 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-00123 |
| Entity Tax Identification Number | 61-0143150 |
| Entity Address, Address Line One | 850 Dixie Highway |
| Entity Address, City or Town | Louisville |
| Entity Address, State or Province | KY |
| Entity Address, Postal Zip Code | 40210 |
| City Area Code | (502) |
| Local Phone Number | 585-1100 |
| 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 | Class A Common Stock (voting), $0.15 par value |
| Trading Symbol | BFA |
| Security Exchange Name | NYSE |
| Common Class B [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class B Common Stock (nonvoting), $0.15 par value |
| Trading Symbol | BFB |
| Security Exchange Name | NYSE |
| M 1.200 Notes Due 2026 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.200% Notes due 2026 |
| Trading Symbol | BF26 |
| Security Exchange Name | NYSE |
| M 2.600 Notes Due 2028 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 2.600% Notes due 2028 |
| Trading Symbol | BF28 |
| Security Exchange Name | NYSE |
