v3.26.1
Fair Value Measurements - Summary of Assets Measured at Fair Value on a Non-Recurring Basis (Detail)
¥ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2025
USD ($)
Produced Content        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Produced contents monetized on its own ¥ 47   ¥ 74 $ 7
Produced contents monetized on its own (86) $ (12) (95)  
Long Term Investments        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Long-term investments [1] 530   1,242 76
Long-term investments [1] 31 5 261  
Long Lived Assets [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Core asset group as of September 30, 2025 (16,190) $ (2,315)    
Core asset group as of September 30, 2025 44,748     $ 6,399
Fair Value, Inputs, Level 3 | Produced Content        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Produced contents monetized on its own 47   74  
Fair Value, Inputs, Level 3 | Long Term Investments        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Long-term investments [1] 530   ¥ 1,242  
Fair Value, Inputs, Level 3 | Long Lived Assets [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Core asset group as of September 30, 2025 ¥ 44,748      
[1] Due to declined financial performances and changes in business circumstances of certain investees, the Group recognized impairment charges of long-term investments in the consolidated statements of comprehensive income during the years ended December 31, 2024 and 2025. For equity investments without readily determinable fair value using the measurement alternative, when there are observable price changes in orderly transactions for identical or similar investments of the same issuer, the investments are re-measured to fair value.