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Intangible Assets, Net (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 12,500,000	$ 14,400,000	$ 38,800,000
Sohu [Member] | Sohu Video's intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total losses for impairment	14,000	1,500,000	4,000,000.0
Sohu [Member] | 56.com Website's intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total losses for impairment			$ 7,200,000
Changyou [Member] | Content and game licenses intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total losses for impairment	1,700,000	2,700,000
Intangible assets impairment losses	100,000	800,000
Prepaid and other current assets impairment losses	$ 1,600,000	$ 1,900,000

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Prepaid and other current assets impairment losses

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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