Commitments and Contingencies - Additional Information (Detail)		3 Months Ended
	Dec. 27, 2022 USD ($) Engine	Dec. 31, 2022 USD ($) Engine Lawsuit	Jul. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)
Purchase Commitment Excluding Longterm Commitment [Line Items]
Number of spare engines to be sold | Engine		30
Number of putative class action lawsuits | Lawsuit		2
Gross proceeds from sale of asset		$ 80,000,000
Proceeds from sale of property		$ 8,200,000
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
Engine Sale Agreement [Member]
Purchase Commitment Excluding Longterm Commitment [Line Items]
Number of spare engines to be sold | Engine	30
Gross proceeds from sale of asset	$ 80,000,000.0
Proceeds from sale of property	$ 53,600,000
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		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 | Engine		10
Number of new spare engines purchased | Engine		10
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