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VIEs (VIEs Consolidated within Sohu Group, Summary of Significant Agreements Currently in Effect) (Details)	12 Months Ended
	Dec. 31, 2021
Shareholders of Gamease [Member] | AmazGame [Member]
Variable Interest Entity [Line Items]
Power of attorney term	10 years
Percentage of exchange equity interests due to contributions to registered capital of equity	100.00%
Shareholders of Guanyou Gamespace [Member] | Gamespace [Member]
Variable Interest Entity [Line Items]
Power of attorney term	10 years
Percentage of exchange equity interests due to contributions to registered capital of equity	100.00%
VIEs [Member] | Shareholders of Tianjin Jinhu [Member] | Video Tianjin [Member]
Variable Interest Entity [Line Items]
Power of attorney term	10 years
Tianjin Jinhu Culture Development Co., Ltd ("Tianjin Jinhu") [Member] | Video Tianjin [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	10 years
Tianjin Jinhu Culture Development Co., Ltd ("Tianjin Jinhu") [Member] | Shareholders of Tianjin Jinhu [Member] | Video Tianjin [Member]
Variable Interest Entity [Line Items]
Business operation agreement term	10 years
Beijing Gamease Age Digital Technology Co., Ltd. ("Gamease") [Member] | Shareholders of Gamease [Member] | AmazGame [Member]
Variable Interest Entity [Line Items]
Business operation agreement term	10 years
Beijing Guanyou Gamespace Digital Technology Co., Ltd. ("Guanyou Gamespace") [Member] | Shareholders of Guanyou Gamespace [Member] | Gamespace [Member]
Variable Interest Entity [Line Items]
Business operation agreement term	10 years
Beijing Sohu Internet Information Service Co., Ltd. ("Sohu Internet") [Member] | Sohu Era [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	2 years
Donglin [Member] | Sohu Media [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	3 years

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- Definition

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- Definition

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- Definition

Percentage of Exchange Equity Interests Due to Contributions to Registered Capital of Equity

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- Definition

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Details

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X

- Details

Name:	dei_LegalEntityAxis=sohu_BeijingAmazGameAgeInternetTechnologyCoLtdMember
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Balance Type:
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X

- Details

Name:	sohu_ShareholdersOfLegalEntityAxis=sohu_ShareholdersOfGuanyouGamespaceMember
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X

- Details

Name:	dei_LegalEntityAxis=sohu_BeijingChangyouGamespaceSoftwareTechnologyCoLtdMember
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- Details

Name:	sohu_ShareholdersOfLegalEntityAxis=sohu_ShareholdersOfTianjinJinhuMember
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X

- Details

Name:	dei_LegalEntityAxis=sohu_FoxInformationTechnologyTianjinLimitedMember
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Name:	srt_ConsolidatedEntitiesAxis=sohu_TianjinJinhuCultureDevelopmentCoLtdMember
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