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Sohu.com Limited Shareholders' Equity (Changyou 2019 Share Incentive Plan) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Apr. 17, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Feb. 02, 2021
Aug. 26, 2019
Aug. 03, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense   $ 8,578 $ 14,480 $ 2,350      
Changyou 2019 Share Incentive Plan [Member] | Share Options [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options granted in period   954,500          
Changyou [Member] | Share Options [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options granted in period   5,443,000          
Changyou [Member] | Share Options [Member] | Class A ordinary shares [Member] | Changyou Merger [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Exercise prices of option granted $ 0.01            
Changyou [Member] | Changyou 2019 Share Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Toal share based compensation expense   $ 3,900 4,800        
Total value of share options vested   $ 2,600 $ 2,600        
Changyou [Member] | Changyou 2019 Share Incentive Plan [Member] | Class A ordinary shares [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share based compensation by share based payment arrangement options excercised exercise price per share 5.39            
Changyou [Member] | Changyou 2019 Share Incentive Plan [Member] | Share Options [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Installments of share options granted   four equal installments          
Award vesting period   4 years          
Share-based compensation expense   $ 2,600          
Changyou [Member] | Changyou 2019 Share Incentive Plan [Member] | Share Options [Member] | Class A ordinary shares [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares reserved for issuance             3,000,000
Changyou [Member] | Changyou 2019 Share Incentive Plan [Member] | Share Options [Member] | Class A ordinary shares [Member] | Changyou Merger [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangements by Share-based Payment Award Options Not Exercisable in Period Conditionally Repurchased Price 5.39            
Accrued fixed price, initial 5.39            
Accrued fixed price, final $ 5.39            
Changyou [Member] | Changyou 2019 Share Incentive Plan [Member] | Share Options [Member] | Class A ordinary shares [Member] | Certain members of management and certain other employees [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares under contractually granted share options         600,000 1,909,000  
Exercise prices of option granted         $ 0.01 $ 0.01