v3.21.2
Stock-based Compensation - Summary Of Stock Option Activity (Detail) - 2017 Amended Equity Incentive Plan [Member] - Bird Rides [Member] - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options Outstanding Number of Shares, Beginning Balance 17,615,142 10,686,041  
Options Outstanding Number of Shares, Granted 12,724,256 11,187,900  
Options Outstanding Number of Shares, Exercised (5,516,282) (596,870)  
Options Outstanding Number of Shares, Forfeited and Canceled (5,348,090) (3,557,844)  
Options Outstanding Number of Shares, Expired (233,482) (104,085)  
Options Outstanding Number of Shares, Ending Balance 19,241,544 17,615,142 10,686,041
Options Outstanding Number of Shares, Vested and expected to vest 19,241,544    
Options Outstanding Number of Shares, Exercisable 8,887,906    
Weighted-Average Exercise Price Per Share, Beginning Balance $ 2.64 $ 2.82  
Weighted-Average Exercise Price Per Share, Granted 0.18 3.31  
Weighted-Average Exercise Price Per Share, Exercised (0.16) (1.34)  
Weighted-Average Exercise Price Per Share, Forfeited and Canceled (0.52) (2.83)  
Weighted-Average Exercise Price Per Share, Expired (0.61) (3.08)  
Weighted-Average Exercise Price Per Share, Ending Balance 0.18 $ 2.64 $ 2.82
Weighted-Average Exercise Price Per Share, Vested and expected to vest 0.18    
Weighted-Average Exercise Price Per Share, Exercisable $ 0.16    
Aggregate intrinsic value, Outstanding $ 40,909 $ 12,800 $ 24,853
Aggregate intrinsic value, Vested and expected to vest 40,909    
Aggregate intrinsic value, Exercisable $ 18,925    
Weighted-Average Remaining Contractual Life (in years) 9 years 2 months 15 days 8 years 25 days 7 years 5 months 1 day
Weighted-Average Remaining Contractual Life (in years), Vested and expected to vest 9 years 2 months 15 days    
Weighted-Average Remaining Contractual Life (in years), Exercisable 8 years 11 months 26 days