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Taxation (PRC Value-Added Tax) (Details)	12 Months Ended
	Dec. 31, 2021
State Administration of Taxation, China [Member]
Value added tax [Line Items]
Value-added tax rate	6.00%

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- Definition

Value Added Tax [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	sohu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Value-added tax rate.

+ References

No definition available.

+ Details

Name:	sohu_ValueaddedTaxRate
Namespace Prefix:	sohu_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	sohu_ValueAddedTaxAuthorityNameAxis=us-gaap_StateAdministrationOfTaxationChinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: