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.

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

Redeemable Noncontrolling Interest - Narrative (Details)	Dec. 31, 2023	May 01, 2021
BuzzFeed Japan
Redeemable Noncontrolling Interest [Line Items]
Ownership interest, noncontrolling owners (in percent)	49.00%
Yahoo Japan
Redeemable Noncontrolling Interest [Line Items]
Ownership interest, noncontrolling owners (in percent)		24.50%