Nature of Business and Significant Accounting Policies - SPAC Transaction and Basis of Presentation (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Jul. 01, 2021
USD ($)
$ / shares
shares
Jul. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
Dec. 31, 2019
Business combination transaction value $ 3,820,000        
Legacy Sharecare shares converted to common stock | shares 271,051,959   271,051,959    
Common stock, par value (in dollars per share) | $ / shares $ 0.0001   $ 0.0001 $ 0.0001  
Cash paid to Legacy Sharecare stockholders $ 91,700   $ 91,698    
Gross proceeds from Business Combination $ 571,000        
Settlement of debt   $ 178,400      
Exchange ratio 71.26        
Foreign Tax Credit, Term     3 years    
Security Deposit     $ 700 $ 800  
Long-Term Foreign Tax Credits     1,400 1,500  
Long-Term Asset, Upfront Research And Development Costs     $ 6,100    
Deferred Costs, Reverse Recapitalization       $ 2,100  
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | One Largest Customer [Member]          
Concentration Risk, Percentage     11.00% 16.00% 17.00%
Accounts Receivable [Member] | Credit Concentration Risk [Member] | One Largest Customer [Member]          
Concentration Risk, Percentage     11.00% 14.00%  
Geographic Distribution, Domestic [Member] | Revenue from Contract with Customer Benchmark [Member] | Geographic Concentration Risk [Member]          
Concentration Risk, Percentage     95.00% 95.00% 94.00%