Commitments and Contingencies - Additional information (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
Oct. 31, 2020	Mar. 31, 2022
Commitments and Contingencies.
Maximum amount of new guarantee under lease agreement	$ 5.4	$ 2.3

Represents the maximum amount of new guarantee under lease agreement.

No definition available.

Name:	bzfd_MaximumAmountOfNewGuaranteeUnderLeaseAgreement
Namespace Prefix:	bzfd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration