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Redeemable Noncontrolling Interest (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
May 01, 2021
Redeemable Noncontrolling Interest        
Beginning balance $ 848 $ 28 $ (245)  
Merger of BuzzFeed Japan and HuffPost Japan 510      
Allocation of net (income) loss 936 820 273  
Ending balance $ 2,294 $ 848 $ 28  
BuzzFeed Japan        
Redeemable Noncontrolling Interest [Line Items]        
Ownership (In percentage) 49.00%      
Yohoo Japan's        
Redeemable Noncontrolling Interest [Line Items]        
Ownership (In percentage)       24.50%