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Significant Accounting Policies - Summary of Advertising and Promotional Service Providers (Details) - Advertising and promotional service expense - item	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Advertising and promotional service providers
Number of service providers that accounted for 10% or more of the Group's advertising and promotional expenses	182	198	203
Supplier concentration risk
Advertising and promotional service providers
Number of service providers that accounted for 10% or more of the Group's advertising and promotional expenses	2	2	3
Customer concentration risk | Major customers for advertising business
Advertising and promotional service providers
Total percentage of the Group's advertising and promotional expenses that were paid to these service providers who accounted for 10% or more of the Group's advertising and promotional service expenses	35.70%	44.90%	38.10%

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Disclosure of advertising and promotional service providers details

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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