SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Schedule of Property, Plant and Equipment Useful Lives

Property, plant and equipment and leasing equipment are stated at cost (inclusive of capitalized acquisition costs, where applicable) and depreciated using the straight-line method, over its estimated useful lives, to estimated residual values which are summarized as follows:

Asset	Range of Estimated Useful Lives	Residual Value Estimates
Aircraft	25 years from date of manufacture	Generally not to exceed 15% of manufacturer’s list price when new
Aircraft engines	2 - 6 years, based on maintenance adjusted service life	Sum of engine core salvage value plus the estimated fair value of life limited parts
Aviation tooling and equipment	3 - 6 years from date of purchase	Scrap value at end of useful life
Buildings and improvements	40 to 50 years	Scrap value at end of useful life
Machinery and equipment	6 - 23 years	Scrap value at end of useful life
Furniture and fixtures	3 - 6 years from date of purchase	None
Computer hardware and software	2 - 5 years from date of purchase	None
Land	N/A	N/A
Construction in progress	N/A	N/A
Other	5 - 7 years	N/A

Schedule of Allowance for Credit Loss

The activity in the allowance for doubtful accounts is as follows:

	December 31,
	2025		2024		2023
Allowance at beginning of period	$	74,947	$	72,163	$	65,580
Bad debt expense	574		2,784		6,583
Write-offs and recoveries, net	(47,134)		—		—
Allowance at end of period	$	28,387	$	74,947	$	72,163

Schedule of Other Current Assets

Other current assets are summarized as follows:

	December 31,
	2025		2024
Notes receivable	$	216,298	$	165,338
Prepaid expenses including prepayments for maintenance that has not yet been incurred	79,806		87,323
Financing receivable resulting from failed sale-leaseback transactions	37,740		32,486
Purchase deposits	12,791		83,229
Contract asset from the 2025 Partnership	16,835		—
Other	44,894		40,547
Other current assets	$	408,364	$	408,923

Schedule of Other Non-current Assets

Other non-current assets are summarized as follows:

	December 31,
	2025		2024
Lease incentives	$	43,688	$	56,812
Deferred tax assets	31,920		42,893
Financing receivable resulting from failed sale-leaseback transactions	19,109		28,412
Maintenance right assets	6,374		25,907
Other	65,969		54,406
Other non-current assets	$	167,060	$	208,430

Other Current Liabilities

Other current liabilities are summarized as follows:

	December 31,
	2025		2024
Deposits on sales of leasing equipment	33,755		$	87,296
Other	28,447		13,269
Other current liabilities	$	62,202	$	100,565

Schedule of Cash and Noncash Related Activities

The cash and noncash related activities described above during the years ended December 31, 2025, 2024 and 2023 are detailed below:

	Year Ended December 31,
(in thousands)	2025		2024		2023
Cost of modules and parts sold sourced from engines originally within leasing equipment	$	25,558	$	38,300	$	41,167
Transfers of engines from leasing equipment to inventory for manufacturing and sale	259,383		239,462		178,740
Transfers of inventory to leasing equipment for rebuilding and sale of engines	(255,845)		(223,129)		(78,788)
Total outflows related to manufacturing modules and parts - included in net cash (used in) provided by operating activities	(779,374)		(345,821)		(138,045)
Cash received for assets sold sourced from leasing equipment - inflow included in cash (used in) provided by operating activities	61,513		76,157		94,222
Cash received for sales of leasing equipment that include components sourced from inventory - inflow included in cash used in investing activities	1,058,961		436,217		79,474
Cash paid for engine and aircraft inventory - outflow included in cash provided by (used in) operating activities	(325,056)		(8,280)		—

For the year ended December 31, 2025, the Company paid income taxes, net of refunds, by jurisdiction as follows:

	Year Ended December 31,
	2025
Ireland	$	1,238
US Federal	8,777
Florida (US State)	2,735
Other	2,911
Total	$	15,661

Note: The table above also is a result of the adoption of ASU 2023-09 for the year ended December 31, 2025. Historically, any cash taxes paid disclosure was disclosed in the Statement of Cash Flows. Cash paid for taxes was $5,655 and $1,393 in the years ended December 31, 2024 and 2023, respectively.