Post-effective amendment to a registration statement that is not immediately effective upon filing

Stock-Based Compensation Expense - Additional information (Detail)

v3.22.0.1
Stock-Based Compensation Expense - Additional information (Detail)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 01, 2022
shares
Dec. 31, 2021
USD ($)
Day
$ / shares
Nov. 04, 2021
shares
Dec. 31, 2021
USD ($)
Day
$ / shares
shares
Dec. 31, 2020
$ / shares
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period   4 years      
Expected term       5 years 10 months 28 days 5 years 11 months 1 day
Risk-free interest rate       1.70% 0.70%
Share-based compensation arrangement by share-based payment award fair value assumptions, expected volatility rate       50.80% 46.10%
Expected dividend yield       0.00% 0.00%
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $   $ 291.4   $ 291.4  
Two Thousand And Seventeen Equity Incentive Plan [Member] | Bird Rides [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period       4 years  
Share based compensation arrangement by share based payment award, Number of vesting schedules | Day       2  
BRDSTwo Thousand And Twenty One Equity Incentive Plan          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Number of vesting schedules | Day   2      
Number of common shares reserved for future issuance | shares     59,500,730    
Number of common shares reserved for future issuance additions | shares 13,732,005   17,820,688    
Share based compensation arrangement By share based payment award cumulative annual increase percentage     5.00%    
One Vesting Schedule [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period   3 years      
One Vesting Schedule [Member] | Two Thousand And Seventeen Equity Incentive Plan [Member] | Maximum [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Vesting basis       quarterly  
One Vesting Schedule [Member] | Two Thousand And Seventeen Equity Incentive Plan [Member] | Minimum [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Vesting basis       monthly  
One Vesting Schedule [Member] | Two Thousand And Seventeen Equity Incentive Plan [Member] | Bird Rides [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period       3 years  
Share based compensation arrangement by share based payment award, Award vesting period, Period of cliff vest       1 year  
One Vesting Schedule [Member] | BRDSTwo Thousand And Twenty One Equity Incentive Plan          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period, Period of cliff vest   1 year      
Share based compensation arrangement by share based payment award, Vesting basis   quarterly      
Second Vesting Schedule [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period   4 years      
Second Vesting Schedule [Member] | Two Thousand And Seventeen Equity Incentive Plan [Member] | Bird Rides [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Award vesting period       4 years  
Second Vesting Schedule [Member] | BRDSTwo Thousand And Twenty One Equity Incentive Plan          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share based compensation arrangement by share based payment award, Vesting basis   quarterly      
Share-based Payment Arrangement, Option [Member] | Share Based Payment Arrangement Employee          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
weighted-average fair value of stock options granted       $ 6.97 $ 0.46
Restricted Stock Units (RSUs) [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Equity Instruments Other than Options, Grants in Period | shares       53,900,000  
Management Award R S U [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Equity Instruments Other than Options, Grants in Period | shares       29,100,000  
Unrecognized stock-based compensation expense restricted stock units | $   $ 176.3   $ 176.3  
Share-based compensation arrangement by share-based payment award fair value assumptions, share price   $ 8.34   $ 8.34  
Risk-free interest rate       1.10%  
Share-based compensation arrangement by share-based payment award fair value assumptions, expected volatility rate       60.00%  
Expected dividend yield       0.00%  
Share-based payment arrangement, expense | $       $ 47.5  
Management Award R S U [Member] | Share-based Payment Arrangement, Tranche One [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share Price   12.50   $ 12.50  
Management Award R S U [Member] | Share-based Payment Arrangement, Tranche Two [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share Price   20   20  
Management Award R S U [Member] | Share-based Payment Arrangement, Tranche Three [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Share Price   $ 30   $ 30  
Management Award R S U [Member] | Maximum [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Expected term       16 days  
Management Award R S U [Member] | Minimum [Member]          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Expected term       3 days 21 hours