v3.26.1
Fair Value Measurements - Schedule of Investments accounted at Fair Value (Detail) - Investment Accounted for at Fair Value
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Begining Balance ¥ 4,347   ¥ 4,775
Additions 398   159
Disposals ¥ (171)   ¥ (248)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Net unrealized fair value decrease (increase) recognized in earnings ¥ 49   ¥ (376)
Foreign currency translation adjustments (49)   37
Ending balance ¥ 4,574 $ 654 ¥ 4,347