| Document and Entity Information | Aug. 30, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 30, 2021 |
| Entity Registrant Name | BED BATH & BEYOND INC |
| Entity Incorporation, State or Country Code | NY |
| Entity File Number | 0-20214 |
| Entity Tax Identification Number | 11-2250488 |
| Entity Address, Address Line One | 650 Liberty Avenue |
| Entity Address, City or Town | Union |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07083 |
| City Area Code | 908 |
| Local Phone Number | 688-0888 |
| 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 | 0000886158 |
| Title of 12(b) Security | Common stock, $.01 par value |
| Trading Symbol | BBBY |
| Security Exchange Name | NASDAQ |
