v3.22.1
Option Activity Baidu. Inc (Detail) - Parent Company - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Number of shares options    
Outstanding, December 31, 2020 24,219,040  
Granted 1,299,528  
Exercised (3,040,752)  
Forfeited/Cancelled (1,024,256)  
Outstanding, December 31, 2021 21,453,560 24,219,040
Vested and expected to vest at December 31, 2021 18,836,432  
Exercisable at December 31, 2021 14,356,680  
Weighted average exercise price (US$)    
Outstanding, December 31, 2020 $ 17  
Granted 17  
Exercised 15  
Forfeited/Cancelled 14  
Outstanding, December 31, 2021 17 $ 17
Vested and expected to vest at December 31, 2021 18  
Exercisable at December 31, 2021 $ 19  
Weighted average remaining contractual life (Years)    
Outstanding 6 years 7 years
Vested and expected to vest at December 31, 2021 6 years  
Exercisable at December 31, 2021 5 years  
Aggregate intrinsic value (US$ in millions)    
Outstanding $ 84 $ 245
Vested and expected to vest at December 31, 2021 69  
Exercisable at December 31, 2021 $ 44