Consolidated Statements of Cash Flows - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2022	Feb. 28, 2021	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 3,659	$ (278,209)	$ (333,168)	$ 156,575
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	59,853	337,528	347,517	356,021
Amortization of deferred financing costs	2,446	16,267	14,791	14,578
Amortization of lease premiums, discounts and incentives	3,669	20,190	22,842	22,636
Deferred income taxes	1,453	(9,386)	6,506	20,223
Non-cash share-based payment expense	10,678	0	28,049	15,830
Cash flow hedges reclassified into earnings	0	0	0	184
Sales-type and Direct Financing Leases, Profit (Loss)	(5,658)	(14,297)	(16,859)	(25,842)
Security deposits and maintenance payments included in earnings	(47,293)	(123,969)	(135,115)	(49,029)
Gain on the sale of flight equipment	(15,354)	(26,001)	(33,536)	(45,532)
Gain (Loss) on Extinguishment of Debt	3,955	14,156	2,640	7,577
Impairment of flight equipment	62,657	452,250	425,579	7,404
Provision for Loan and Lease Losses	288	930	5,258	0
Other	(402)	(3,043)	(2,305)	206
Changes on certain assets and liabilities:
Accounts receivable	(6,377)	16,948	(57,292)	(13,162)
Other assets	5,786	(29,963)	(66,290)	2,594
Accounts payable, accrued expenses and other liabilities	10,205	(5,716)	(13,655)	(5,483)
Lease rentals received in advance	143	(23,414)	(53,658)	19,954
Net Cash and Restricted Cash Provided by (Used in) Operating Activities	101,024	372,865	175,022	536,418
Cash flows from investing activities:
Acquisition and improvement of flight equipment	(23,035)	(795,426)	(145,589)	(1,172,370)
Proceeds from sale of flight equipment	103,679	210,718	180,342	361,747
Aircraft purchase deposits and progress payments, net of returned deposits and aircraft sales deposits	(4,614)	(202)	(13,024)	760
Unconsolidated equity method investment and associated costs	0	0	0	(15,175)
Distributions from unconsolidated equity method investment in excess of earnings	0	104	419	36,750
Other	(56)	(1,694)	(676)	4,259
Net cash and restricted cash provided by (used in) investing activities	75,974	(586,500)	21,472	(784,029)
Cash flows from financing activities:
Payments for Repurchase of Equity	(2,370)	0	(25,536)	(36,739)
Proceeds from Contributions from Parent	0	0	25,536	0
Proceeds from Issuance of Preferred Stock and Preference Stock	0	392,997	0	0
Proceeds from secured and unsecured debt financings	100,000	20,000	1,932,943	2,116,848
Repayments of secured and unsecured debt financings	(268,799)	(646,943)	(1,697,662)	(1,817,558)
Deferred financing costs	0	(5,339)	(12,832)	(13,800)
Payment for Debt Extinguishment or Debt Prepayment Cost	(2,685)	(13,372)	(1,524)	(7,183)
Security deposits and maintenance payments received	29,806	88,891	87,510	202,833
Security deposits and maintenance payments returned	(16,956)	(26,857)	(71,743)	(117,872)
Dividends paid	0	(5,658)	(24,025)	(91,328)
Net cash and restricted cash provided by (used in) financing activities	(161,004)	(196,281)	212,667	235,201
Net (decrease) increase in cash and restricted cash	15,994	(409,916)	409,161	(12,410)
Cash and restricted cash at beginning of year	155,443	580,598	171,437	167,853
Cash and restricted cash at end of year	171,437	170,682	580,598	155,443
Cash and Cash Equivalents, at Carrying Value	166,083	167,891	578,004	140,882
Restricted Cash and Cash Equivalents	5,354	2,791	2,594	14,561
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	21,487	200,922	241,011	246,026
Cash paid (received) during the year for income taxes	(15)	240	1,469	(656)
Supplemental disclosures of non-cash investing activities:
Advance lease rentals, security deposits, maintenance payments, other liabilities and other assets settled in sale of flight equipment	7,873	12,391	70,716	90,397
Advance lease rentals, security deposits, maintenance payments, other liabilities and other assets assumed in asset acquisitions	16,693	21,764	29,869	31,958
Transfers from Flight equipment held for lease to Net investment in direct financing and sales-type leases and Other assets	$ 31,821	$ 57,489	$ 90,352	$ 104,838