Bird Global, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

Fair Value Measurements - Additional Information (Detail) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
	Nov. 05, 2021 tradingDay shares	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mark-to-market adjustments of derivatives liabilities, income (expense) \| $		$ 2.4	$ 6.4	$ (132.6)	$ 53.6
Private Placement Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Class of warrant or right, outstanding	6.6
Public Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Class of warrant or right, outstanding	6.3
C-1 Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Class of warrant or right, outstanding	0.1
Earnout Shares \| Common Class A
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument, contingent consideration, liability, shares	30.0
Derivative instrument, contingent consideration, liability, earnout period	5 years
Derivative instrument, contingent consideration, liability, earnout period, threshold trading days \| tradingDay	10
Derivative instrument, contingent consideration, liability, earnout period, threshold consecutive trading day period \| tradingDay	20
Switchback Founder Earn Back Shares \| Common Class A
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument, contingent consideration, liability, shares	2.0
Switchback Founder Earn Back Shares \| Common Class A \| Derivative Instrument, Period, One
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument, contingent consideration, liability, earnout period, threshold trading days \| tradingDay	10
Derivative instrument, contingent consideration, liability, earnout period, threshold consecutive trading day period \| tradingDay	20