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Taxation (PRC Corporate Income Tax) (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax and Tax Rate [Line Items] |  |  |
Statutory income tax rate | 25.00% | 25.00% | 25.00%
Guangzhou Qianjun Network Technology Co., Ltd. [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Statutory income tax rate | 25.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
Preferential income tax rate period (years) | 3 years |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Video Tianjin [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sohu Internet [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sohu New Momentum [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sohu Media [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Gamease [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | AmazGame [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Gamespace [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Changyou Chuangxiang [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 15.00% |  |
State Administration of Taxation, China [Member] | Software Enterprise [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate | 12.50% |  |
Preferential income tax rate period (years) | 3 years |  |
Income tax exemption period beginning with first profitable year | 2 years |  |
Tax rate reduction rate | 50.00% |  |
State Administration of Taxation, China [Member] | Software Enterprise [Member] | Changyou Chuangxiang [Member] |  |  |
Income Tax and Tax Rate [Line Items] |  |  |
Preferential income tax rate |  | 12.50% |

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