v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
12 Months Ended
May 06, 2024
Apr. 25, 2024
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Significant Accounting Policies [Line Items]          
Restricted cash     $ 19,300,000 $ 16,300,000  
Film, Monetized on Its Own, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]     Cost of revenue, excluding depreciation and amortization Cost of revenue, excluding depreciation and amortization Cost of revenue, excluding depreciation and amortization
Amortized film costs     $ 7,400,000 $ 100,000 $ 3,200,000
Capitalized cost, reduction from proceeds received     4,700,000    
Reduction in capitalized film costs from production tax incentives     2,600,000 300,000  
Film costs, production tax incentives, reduction of cost of revenue     2,000,000.0    
Production tax credit receivable     3,200,000 1,300,000  
Total carrying value of investment     800,000 800,000  
Impairment of long-lived assets     0 0 0
Income tax benefit for stock- based compensation arrangements     $ 0 $ 0 $ 0
Customer 1 | Accounts Receivable | Customer Concentration Risk          
Significant Accounting Policies [Line Items]          
Concentration risk (as percent)     26.00% 26.00%  
Customer 1 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Significant Accounting Policies [Line Items]          
Concentration risk (as percent)     28.00% 30.00% 20.00%
Customer 2 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Significant Accounting Policies [Line Items]          
Concentration risk (as percent)         11.00%
Class A Common Stock          
Significant Accounting Policies [Line Items]          
Stock spilt ratio 0.25        
Class B Common Stock          
Significant Accounting Policies [Line Items]          
Stock spilt ratio 0.25        
Minimum          
Significant Accounting Policies [Line Items]          
Estimated useful life of capitalized software enhancements (in years)     1 year    
Minimum | Class A Common Stock          
Significant Accounting Policies [Line Items]          
Proposed stock split, conversion ratio   0.5      
Minimum | Class B Common Stock          
Significant Accounting Policies [Line Items]          
Proposed stock split, conversion ratio   0.5      
Maximum          
Significant Accounting Policies [Line Items]          
Estimated useful life of capitalized software enhancements (in years)     3 years    
Maximum | Class A Common Stock          
Significant Accounting Policies [Line Items]          
Proposed stock split, conversion ratio   0.04      
Maximum | Class B Common Stock          
Significant Accounting Policies [Line Items]          
Proposed stock split, conversion ratio   0.04      
BuzzFeed Japan          
Significant Accounting Policies [Line Items]          
Ownership interest (as percent)       52.60%  
BuzzFeed Japan | Minority Interest Partner          
Significant Accounting Policies [Line Items]          
Ownership interest, noncontrolling owners (as percent)       3.00%  
BuzzFeed Japan | Asahi Shimbun Company          
Significant Accounting Policies [Line Items]          
Ownership interest, noncontrolling owners (as percent)       25.30%  
BuzzFeed Japan | Asahi Broadcasting Group Holdings Corporation Ltd          
Significant Accounting Policies [Line Items]          
Ownership interest, noncontrolling owners (as percent)       22.10%