v3.26.1
Tax Benefit (expense) Allocated to each Component of Other Comprehensive Income (loss) (Detail)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Other Comprehensive Income (Loss), Tax [Abstract]        
Unrealized losses on available-for-sale investments ¥ (4) $ (1) ¥ (18) ¥ (13)