Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Mar. 27, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-39877
Entity Registrant Name	BuzzFeed, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3022075
Entity Address, Address Line One	229 West 43rd Street
Entity Address, State or Province	NY
Entity Address, City or Town	New York
Entity Address, Postal Zip Code	10036
City Area Code	646
Local Phone Number	397-2039
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 57.1
Entity Central Index Key	0001828972
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Amendment Flag	false
Auditor Name	Deloitte & Touche LLP
Auditor Firm ID	34
Auditor Location	New York, New York
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
Entity Common Stock, Shares Outstanding		140,315,010
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
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,473,940
Class C Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0