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Redeemable Noncontrolling Interest - Narrative (Details)	May 01, 2021	Apr. 30, 2021
BuzzFeed Japan | Yahoo Japan
Redeemable Noncontrolling Interest [Line Items]
Ownership interest, noncontrolling owners (as percent)	24.50%	49.00%

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RedeemableNoncontrollingInterestLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_OwnershipAxis=bzfd_BuzzfeedJapanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=bzfd_YahooJapanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: