v3.21.2
Common and Preferred Stock (As Restated) - Additional Information (Detail)
9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
$ / shares
shares
May 04, 2021
$ / shares
shares
Sep. 30, 2020
$ / shares
shares
Jul. 15, 2019
$ / shares
Dec. 31, 2018
shares
Temporary Equity [Line Items]              
Common stock shares issued       100      
Common stock shares authorized 100     100      
Common stock par or stated value per share | $ / shares $ 0.000001     $ 0.000001      
Founders Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Common stock shares outstanding   4,540,177         4,540,177
Bird Rides [Member]              
Temporary Equity [Line Items]              
Common stock shares issued 62,947,411 54,200,000 34,800,000        
Common stock shares outstanding   54,200,000 34,800,000        
Common stock shares authorized 287,921,028 275,000,000.0 229,000,000.0   275,000,000.0    
Common stock par or stated value per share | $ / shares $ 0.000001 $ 0.000001 $ 0.000001        
Maximum proceeds that could be raised by way of borrowings without the consent of holders of redeemable convertible preferred stock | $   $ 5,000,000.0          
Common stock, voting rights one one          
Liquidation basis of accounting, liquidation plan Under the terms of the restated certificate of incorporation, in the event of a liquidation, and after any distribution to holders of the Senior Preferred Stock and each of the Series Seed, A, B, C, C-1, D, D-1, D-2, and D-3 Prime Preferred Stock or Prior Preferred Stock, any remaining assets available for distribution will be distributed to holders of the Common Stock and Founders Preferred Stock in a pro-rata method Under the terms of the restated articles of incorporation, in the event of a liquidation, and after any distribution to holders of Series Seed, Series A, Series B, Series C, Series C-1, Series D, Series D-1, Series D-2, and Series D-3 Redeemable Convertible Preferred Stock, any remaining assets available for distribution will be distributed to holders of the common stock and Founders Convertible Preferred Stock in a pro rata method.          
Share price | $ / shares           $ 20.70  
Temporary equity, voting rights With the exception of the holders of Series D-1 Prime Preferred Stock, which have no voting rights With exception to holders of Series D-1 Redeemable Convertible Preferred Stock which have no voting rights          
Bird Rides [Member] | Minimum [Member]              
Temporary Equity [Line Items]              
Proceeds from issuance initial public offering | $ $ 30,000,000.0 $ 30,000,000.0          
Bird Rides [Member] | Share Price Used For Determining Stock Conversion [Member]              
Temporary Equity [Line Items]              
Preferred stock, convertible, conversion price | $ / shares $ 1 $ 1          
Bird Rides [Member] | Equity Financing [Member]              
Temporary Equity [Line Items]              
Common integer, share 1 1          
Bird Rides [Member] | Series Seed Redeemable Convertible Preferred Stock One [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series A Redeemable Convertible Preferred Stock One [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series B Redeemable Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series C Redeemable Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series C One Redeemable Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series D Redeemable Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series D One Redeemable Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1 1        
Bird Rides [Member] | Series D Two Redeemable Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Temporary equity to permanent equity conversion ratio   1          
Bird Rides [Member] | Founders Convertible Preferred Stock [Member]              
Temporary Equity [Line Items]              
Common stock shares issued 4,540,177 4,540,177          
Common stock shares outstanding 4,540,177 4,540,177          
Common stock shares authorized 7,493,443 7,493,443          
Common stock par or stated value per share | $ / shares $ 0.000001 $ 0.000001          
Preferred stock, shares authorized 7,500,000 7,500,000 7,500,000   7,500,000    
Preferred stock, par or stated value per share | $ / shares $ 0.000001 $ 0.000001 $ 0.000001   $ 0.000001    
Preferred stock, Shares issued 4,500,000 4,500,000 4,500,000   4,500,000    
Preferred stock, Shares outstanding 4,500,000 4,500,000 4,500,000   4,500,000    
Preferred stock, voting rights Each holder of Founders Preferred Stock is entitled to the number of votes equal to the number of shares of Common Stock into which the shares held by such holder are convertible Each holder of Founders Convertible Preferred Stock is entitled to the number of votes equal to the number of shares of common stock into which the shares held by such holder are convertible.          
Share price | $ / shares $ 1 $ 1          
Preferred stock, conversion basis As of September 30, 2021, each share of Founders Preferred Stock was convertible into one share of Common Stock As of December 31, 2020, each share of Founders Convertible Preferred Stock was convertible into one share of common stock.          
Bird Rides [Member] | Redeemable Convertible Prime Preferred Stock [Member]              
Temporary Equity [Line Items]              
Dividends | $ $ 0 $ 0          
Bird Rides [Member] | Redeemable Convertible Prime Preferred Stock Except Series D One [Member]              
Temporary Equity [Line Items]              
Temporary equity, voting rights each holder of Prime Preferred Stock is entitled to the number of votes equal to the number of shares of Common Stock into which the shares held by such holder are convertible. each holder of preferred stock is entitled to the number of votes equal to the number of shares of common stock into which the shares held by such holder are convertible.          
Bird Rides [Member] | Previously Reported [Member]              
Temporary Equity [Line Items]              
Common stock shares issued   54,900,000 45,200,000        
Common stock shares outstanding   54,900,000 45,200,000        
Bird Rides [Member] | Founder Shares [Member] | Founder [Member]              
Temporary Equity [Line Items]              
Share based compensation by share based award number of shares issued     33,750,000        
Share based compensation by share based award vesting period     4 years