v3.26.1
Related Party Transactions - Additional Information (Detail) - Related Party
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Related Party Investees        
Related Party Transactions With Others [Abstract]        
Sales to related parties ¥ 2,107 $ 301 ¥ 2,728 ¥ 2,699
Related Party Transactions With Investees [Abstract]        
Purchased from related parties ¥ 2,100 $ 304 ¥ 2,500 2,600
Related Party C        
Related Party Transactions With Others [Abstract]        
Sales to related parties       ¥ 1,800