SEGMENT INFORMATION - Statement of Income by Segment (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026		Jun. 30, 2025
Revenues
Total revenues		$ 953,085		$ 676,237		$ 1,783,782		$ 1,178,317
Expenses
Cost of sales		635,782		369,258		1,160,050		617,972
Operating expenses		67,567		34,328		132,554		66,766
General and administrative		2,245		2,442		4,658		5,558
Acquisition and transaction expenses		5,699		4,489		22,060		11,781
Depreciation and amortization		46,986		55,236		99,275		114,798
Total expenses		758,279		465,753		1,418,597		816,875
Other (expense) income
Interest expense		(64,102)		(63,965)		(125,509)		(126,005)
Equity in (losses) earnings of unconsolidated entities	[1]	9,970		(5,003)		7,607	[2]	(12,617)	[2]
Other income		7,574		27,156		55,156		60,227
Total other income (expense)		(44,093)		(7,208)		(45,113)		(32,921)
Income (loss) before income taxes		150,713		203,276		320,072		328,521
Provision for (benefit from) income taxes		25,619		37,878		57,079		60,737
Net income (loss)		125,094	$ 137,899	165,398	$ 102,386	262,993		267,784
Less: Dividends on preferred shares		3,709		3,709		7,418		9,824
Less: Loss on redemption of preferred shares		3,800		0		3,800		6,327
Net income (loss) attributable to shareholders		117,585		161,689		251,775		251,633
Equity Method Investee
Other (expense) income
Gain on sale to the 2025 Partnership		2,465		34,604		17,633		45,474
Aerospace products revenue
Revenues
Total revenues		692,229		420,686		1,214,814		685,111
MRE Contract revenue
Revenues
Total revenues		182,799		69,585		404,029		170,223
Lease income
Revenues
Total revenues		27,765		62,439		67,657		130,879
Maintenance revenue
Revenues
Total revenues		25,793		73,104		56,392		122,711
Asset sales revenue
Revenues
Total revenues		16,925		47,915		27,109		66,854
Other revenue
Revenues
Total revenues	[3]	7,574		2,508		13,781		2,539
Servicing Fees | Equity Method Investee
Revenues
Total revenues		6,988		2,052		12,849		2,600
Operating Segments
Other (expense) income
Equity in (losses) earnings of unconsolidated entities		9,970		(5,003)		7,607		(12,617)
Operating Segments | Aerospace Products
Revenues
Total revenues		875,028		490,271		1,618,843		855,334
Expenses
Cost of sales		614,529		317,469		1,125,541		546,224
Operating expenses		10,997		8,989		21,836		14,676
General and administrative		0		0		0		0
Acquisition and transaction expenses		144		1,414		129		2,546
Depreciation and amortization		4,903		3,704		9,581		7,288
Total expenses		630,573		331,576		1,157,087		570,734
Other (expense) income
Interest expense		0		0		0		0
Equity in (losses) earnings of unconsolidated entities		(182)		714		(222)		827
Other income		(59)		0		112		0
Total other income (expense)		(241)		714		(110)		827
Income (loss) before income taxes		244,214		159,409		461,646		285,427
Provision for (benefit from) income taxes		49,970		25,827		83,667		45,202
Net income (loss)		194,244		133,582		377,979		240,225
Less: Dividends on preferred shares		0		0		0		0
Less: Loss on redemption of preferred shares		0				0		0
Net income (loss) attributable to shareholders		194,244		133,582		377,979		240,225
Operating Segments | Aerospace Products | Equity Method Investee
Other (expense) income
Gain on sale to the 2025 Partnership		0		0		0		0
Operating Segments | Aerospace Products | Aerospace products revenue
Revenues
Total revenues		692,229		420,686		1,214,814		685,111
Operating Segments | Aerospace Products | MRE Contract revenue
Revenues
Total revenues		182,799		69,585		404,029		170,223
Operating Segments | Aerospace Products | Lease income
Revenues
Total revenues		0		0		0		0
Operating Segments | Aerospace Products | Maintenance revenue
Revenues
Total revenues		0		0		0		0
Operating Segments | Aerospace Products | Asset sales revenue
Revenues
Total revenues		0		0		0		0
Operating Segments | Aerospace Products | Other revenue
Revenues
Total revenues		0		0		0		0
Operating Segments | Aviation Leasing
Revenues
Total revenues		78,057		185,966		164,939		322,979
Expenses
Cost of sales		21,253		51,789		34,509		71,748
Operating expenses		11,785		11,089		22,060		18,515
General and administrative		0		0		0		0
Acquisition and transaction expenses		1,848		577		6,034		3,482
Depreciation and amortization		40,985		50,423		87,470		105,484
Total expenses		75,871		113,878		150,073		199,229
Other (expense) income
Interest expense		0		0		0		0
Equity in (losses) earnings of unconsolidated entities		16,749		(782)		24,426		(1,559)
Other income		7,237		26,974		54,476		59,593
Total other income (expense)		26,451		60,796		96,535		103,508
Income (loss) before income taxes		28,637		132,884		111,401		227,258
Provision for (benefit from) income taxes		7,771		26,453		26,097		43,801
Net income (loss)		20,866		106,431		85,304		183,457
Less: Dividends on preferred shares		0		0		0		0
Less: Loss on redemption of preferred shares		0				0		0
Net income (loss) attributable to shareholders		20,866		106,431		85,304		183,457
Operating Segments | Aviation Leasing | Equity Method Investee
Other (expense) income
Gain on sale to the 2025 Partnership		2,465		34,604		17,633		45,474
Operating Segments | Aviation Leasing | Aerospace products revenue
Revenues
Total revenues		0		0		0		0
Operating Segments | Aviation Leasing | MRE Contract revenue
Revenues
Total revenues		0		0		0		0
Operating Segments | Aviation Leasing | Lease income
Revenues
Total revenues		27,765		62,439		67,657		130,879
Operating Segments | Aviation Leasing | Maintenance revenue
Revenues
Total revenues		25,793		73,104		56,392		122,711
Operating Segments | Aviation Leasing | Asset sales revenue
Revenues
Total revenues		16,925		47,915		27,109		66,854
Operating Segments | Aviation Leasing | Other revenue
Revenues
Total revenues		7,574		2,508		13,781		2,535
Corporate and Other
Revenues
Total revenues		0		0		0		4
Expenses
Cost of sales		0		0		0		0
Operating expenses		44,785		14,250		88,658		33,575
General and administrative		2,245		2,442		4,658		5,558
Acquisition and transaction expenses		3,707		2,498		15,897		5,753
Depreciation and amortization		1,098		1,109		2,224		2,026
Total expenses		51,835		20,299		111,437		46,912
Other (expense) income
Interest expense		(64,102)		(63,965)		(125,509)		(126,005)
Equity in (losses) earnings of unconsolidated entities		0		0		0		0
Other income		396		182		568		634
Total other income (expense)		(63,706)		(63,783)		(124,941)		(125,371)
Income (loss) before income taxes		(115,541)		(84,082)		(236,378)		(172,279)
Provision for (benefit from) income taxes		(32,122)		(14,402)		(52,685)		(28,266)
Net income (loss)		(83,419)		(69,680)		(183,693)		(144,013)
Less: Dividends on preferred shares		3,709		3,709		7,418		9,824
Less: Loss on redemption of preferred shares		3,800				3,800		6,327
Net income (loss) attributable to shareholders		(90,928)		(73,389)		(194,911)		(160,164)
Corporate and Other | Equity Method Investee
Other (expense) income
Gain on sale to the 2025 Partnership		0		0		0		0
Corporate and Other | Aerospace products revenue
Revenues
Total revenues		0		0		0		0
Corporate and Other | MRE Contract revenue
Revenues
Total revenues		0		0		0		0
Corporate and Other | Lease income
Revenues
Total revenues		0		0		0		0
Corporate and Other | Maintenance revenue
Revenues
Total revenues		0		0		0		0
Corporate and Other | Asset sales revenue
Revenues
Total revenues		0		0		0		0
Corporate and Other | Other revenue
Revenues
Total revenues		0		0		0		4
Eliminations
Revenues
Total revenues		0		0		0		0
Expenses
Cost of sales		0		0		0		0
Operating expenses		0		0		0		0
General and administrative		0		0		0		0
Acquisition and transaction expenses		0		0		0		0
Depreciation and amortization		0		0		0		0
Total expenses		0		0		0		0
Other (expense) income
Interest expense		0		0		0		0
Equity in (losses) earnings of unconsolidated entities		(6,597)		(4,935)		(16,597)		(11,885)
Other income		0		0		0		0
Total other income (expense)		(6,597)		(4,935)		(16,597)		(11,885)
Income (loss) before income taxes		(6,597)		(4,935)		(16,597)		(11,885)
Provision for (benefit from) income taxes		0		0		0		0
Net income (loss)		(6,597)		(4,935)		(16,597)		(11,885)
Less: Dividends on preferred shares		0		0		0		0
Less: Loss on redemption of preferred shares		0				0		0
Net income (loss) attributable to shareholders		(6,597)		(4,935)		(16,597)		(11,885)
Eliminations | Equity Method Investee
Other (expense) income
Gain on sale to the 2025 Partnership		0		0		0		0
Eliminations | Aerospace products revenue
Revenues
Total revenues		0		0		0		0
Eliminations | MRE Contract revenue
Revenues
Total revenues		0		0		0		0
Eliminations | Lease income
Revenues
Total revenues		0		0		0		0
Eliminations | Maintenance revenue
Revenues
Total revenues		0		0		0		0
Eliminations | Asset sales revenue
Revenues
Total revenues		0		0		0		0
Eliminations | Other revenue
Revenues
Total revenues		$ 0		$ 0		$ 0		$ 0

[1] Includes the profit elimination of $(6,597) and $(16,597) for the three and six months ended June 30, 2026, respectively (2025 - $(4,935) and $(11,885), respectively), for sales to the 2025 Partnership.

[2] Includes the profit elimination of $(16,597) for the six months ended June 30, 2026 (2025 - $(11,885)) for sales to the 2025 Partnership within the Aerospace Products segment.

[3] Includes servicing fees of $6,988 and $12,849 for the three and six months ended June 30, 2026, respectively (2025 - $2,052 and $2,600, respectively), from the 2025 Partnership.