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Commitments and Contingencies - Additional Information (Detail)
 3 Months Ended
Dec. 31, 2022
Engine
Dec. 31, 2021
USD ($)
Engine
Lawsuit
Jul. 31, 2021
USD ($)
Feb. 28, 2021
USD ($)
IPO [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Number of putative class action lawsuits | Lawsuit   2    
Superior Court of State of Arizona [Member] | IPO [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Number of putative class action lawsuits | Lawsuit   1    
U.S. District Court of Arizona [Member] | IPO [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Number of putative class action lawsuits | Lawsuit   1    
Forward Purchase Contract [Member] | Heart Aerospace Incorporated [Member] | Maximum [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Purchase commitment amount | $     $ 1,200,000,000.0  
CF34-8C5 or CF34-8E5 Engines [Member] | Letter Agreement No. 13-3 [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Number of new spare engines to be acquired   10    
New spare engines delivery month and year description   We agreed to purchase and take delivery of ten (10) new CF34-8C5 or CF34-8E5 engines with delivery dates starting from July 1, 2021 through November 1, 2022. The total purchase commitment related to these ten (10) engines is approximately $52.2 million.    
Purchase commitment amount | $   $ 52,200,000    
Number of additional spare engines to be acquired beyond 2022   10    
Number of new spare engines purchased   5    
CF34-8C5 or CF34-8E5 Engines [Member] | Letter Agreement No. 13-3 [Member] | Forecast [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Number of new spare engines to be delivered 5      
eVTOL Aircraft [Member] | Forward Purchase Contract [Member] | Archer Aviation, Inc. [Member]        
Purchase Commitment Excluding Longterm Commitment [Line Items]        
Purchase commitment amount | $       $ 200,000,000.0