Commitments and Contingencies - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2021 USD ($) Engine	Sep. 30, 2023 USD ($) Engine	Jul. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)
Forward Purchase Contract [Member] | Heart Aerospace Incorporated [Member] | Maximum [Member]
Purchase Commitment Excluding Longterm Commitment [Line Items]
Purchase commitment amount			$ 1,200,000,000
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 | Engine		10
New spare engines delivery month and year description		The Company agreed to purchase and take delivery of 10 new CF34-8C5 or CF34-8E5 engines with delivery dates starting from July 1, 2021 through November 1, 2022. During the quarter ended March 31, 2021, a $7.0 million non-refundable purchase deposit was made for the first five engines to be delivered in calendar year 2021.
Purchase deposit	$ 7,000,000
Number of new spare engines to be delivered | Engine	5
Number of additional spare engines to be acquired beyond 2022 | Engine		10
Purchase commitment amount		$ 52,200,000
eVTOL Aircraft [Member] | Forward Purchase Contract [Member] | Archer Aviation, Inc. [Member]
Purchase Commitment Excluding Longterm Commitment [Line Items]
Purchase commitment amount				$ 200,000,000