Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Additional Information (Detail)

v3.21.2
Stock-based Compensation - Additional Information (Detail) - Bird Rides [Member]
3 Months Ended 9 Months Ended
Sep. 30, 2021
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Sep. 30, 2020
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Sep. 30, 2021
Number
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Sep. 30, 2020
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Two Thousand And Seventeen Equity Incentive Plan [Member]        
Share-based Payment Arrangement [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 | Number     2  
Two Thousand And Seventeen Equity Incentive Plan [Member] | One Vesting Schedule [Member]        
Share-based Payment Arrangement [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  
Share based compensation arrangement by share based payment award, Vesting basis     monthly  
Two Thousand And Seventeen Equity Incentive Plan [Member] | Second Vesting Schedule [Member]        
Share-based Payment Arrangement [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, Vesting basis     monthly  
Incentive And Nonqualified Stock Options [Member] | Two Thousand And Seventeen Equity Incentive Plan [Member]        
Share-based Payment Arrangement [Line Items]        
Share based compensation arrangement by share based payment award, Shares issued in period     47,100,000  
Share-based Payment Arrangement, Option [Member]        
Share-based Payment Arrangement [Line Items]        
Share based compensation arrangement by share based payment award, Options, Grants in period, Gross 0 2,600,000 300,000 12,400,000
Restricted Stock Units (RSUs) [Member]        
Share-based Payment Arrangement [Line Items]        
Share based compensation arrangement by share based payment award, Equity instruments other than options, Grants in period 1,000,000.0   5,800,000  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights     The RSUs are subject to two vesting requirements: (i) a service-based or milestone-based requirement and (ii) a liquidation event requirement. The RSUs will vest when both requirements are satisfied.  
Restricted Stock [Member]        
Share-based Payment Arrangement [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, Vesting basis     monthly  
Share based compensation arrangement by share based payment award, Equity instruments other than options, Grants in period 0 0 0 4,800,000
Share based compensation arrangement by share based payment award, Equity instruments other than options, Grants in period, Subject to vesting rights       0