SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Lives of Intangible Assets (Details)	12 Months Ended
Dec. 31, 2025
INTANGIBLE ASSETS, NET
License agreement, Estimated Useful Life	Agreement term
Computer software \| Minimum
INTANGIBLE ASSETS, NET
Estimated Useful Life	3 years
Computer software \| Maximum
INTANGIBLE ASSETS, NET
Estimated Useful Life	10 years
Internet domain name
INTANGIBLE ASSETS, NET
Estimated Useful Life	10 years
Licenses and brand name
INTANGIBLE ASSETS, NET
Estimated Useful Life	10 years
Internet domain name and brand name
INTANGIBLE ASSETS, NET
Estimated Useful Life	10 years
Strategic contracts \| Minimum
INTANGIBLE ASSETS, NET
Estimated Useful Life	3 years
Strategic contracts \| Maximum
INTANGIBLE ASSETS, NET
Estimated Useful Life	5 years
Unpatented technology
INTANGIBLE ASSETS, NET
Estimated Useful Life	3 years

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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