| Cover | Dec. 03, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 3, 2021 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-39877 |
| Entity Registrant Name | BuzzFeed, Inc. |
| Entity Central Index Key | 0001828972 |
| Entity Tax Identification Number | 85-3022075 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 111 East 18th Street |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10003 |
| City Area Code | 212 |
| Local Phone Number | 431-7464 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Entity Information, Former Legal or Registered Name | 890 5th Avenue Partners, Inc. |
| Class A Common Stock, $0.0001 par value per share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, $0.0001 par value per share |
| Trading Symbol | BZFD |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | BZFDW |
| Security Exchange Name | NASDAQ |
| Former Address [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 14 Elm Place |
| Entity Address, Address Line Two | Suite 206 |
| Entity Address, City or Town | Rye |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10580 |
