Leases - Schedule of Sublease Receipts to be Received Under Noncancellable Subleases (Details) $ in Thousands	Sep. 30, 2025 USD ($)
Leases [Abstract]
Remainder of 2025	$ 3,836
2026	4,692
Thereafter	0
Total	$ 8,528

Amount of sublease income receivable in excess of one year to be paid in remainder of current fiscal year.

No definition available.

Name:	bzfd_LesseeOperatingSubleaseIncomeReceivableRemainderOfFiscalYear
Namespace Prefix:	bzfd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant