v3.26.1
Income Taxes - Additional Information (Detail)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Income Taxes [Line Items]        
Unified statutory income tax rate under current EIT law 25.00% 25.00%    
PRC statutory withholding tax rate to which dividends paid by a FIE to any of its foreign non-resident enterprise investors 10.00% 10.00%    
PRC special withholding tax rate to which dividends paid by a FIE to its foreign non-resident enterprise investors in Hong Kong 5.00% 5.00%    
Statutory withholding tax rate for capital gains 10.00% 10.00%    
Net losses deriving from entities in the PRC and Hong Kong ¥ 29,900   $ 4,300  
Accrued withholding tax 3,700 $ 533    
Chinese Mainland Jurisdictions [Member]        
Income Taxes [Line Items]        
Foreign Income Tax Expense (Benefit), Continuing Operations (182) (26)    
Outside Chinese Mainland Jurisdictions [Member]        
Income Taxes [Line Items]        
Foreign Income Tax Expense (Benefit), Continuing Operations ¥ 1,400 $ 206    
High And New Technology Enterprise        
Income Taxes [Line Items]        
A preferential enterprise income tax rate 15.00% 15.00%    
Net operating loss carryforward period 10 years 10 years    
PRC        
Income Taxes [Line Items]        
Net operating loss carryforward period 5 years 5 years    
Net operating loss carryforwards begins to expire 2026 2026    
Baidu HK        
Income Taxes [Line Items]        
Income tax rate 16.50% 16.50%    
Certain PRC Subsidiaries and VIEs | High And New Technology Enterprise        
Income Taxes [Line Items]        
A preferential enterprise income tax rate 15.00% 15.00%    
Other non-current liabilities        
Income Taxes [Line Items]        
Unrecognized tax benefits ¥ 513   $ 73 ¥ 670