CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income/(loss)	$ 128,720	$ (468,993)
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation of flight equipment	259,680	235,308
Write-off of Russian fleet	0	802,352
Stock-based compensation expense	5,896	(2,523)
Deferred taxes	28,726	(133,360)
Amortization of debt discounts and issuance costs	13,073	13,198
Amortization of prepaid lease costs	18,323	13,193
Gain on aircraft sales, trading and other activity	(41,650)	(66,791)
Changes in operating assets and liabilities:
Other assets	(26,907)	(74,560)
Accrued interest and other payables	(45,493)	(64,068)
Rentals received in advance	8,122	938
Net cash provided by operating activities	348,490	254,694
Investing Activities
Acquisition of flight equipment under operating lease	(1,236,828)	(395,402)
Payments for deposits on flight equipment purchases	(4,000)	(172,943)
Proceeds from aircraft sales, trading and other activity	21,391	750
Acquisition of aircraft furnishings, equipment and other assets	(53,939)	(52,974)
Net cash used in investing activities	(1,273,376)	(620,569)
Financing Activities
Cash dividends paid on Class A common stock	(22,178)	(21,088)
Common shares repurchased	0	(97,644)
Cash dividends paid on preferred stock	(10,425)	(10,425)
Tax withholdings on stock-based compensation	(3,229)	(8,095)
Net change in unsecured revolving facilities	653,000	0
Proceeds from debt financings	1,352,766	1,497,615
Payments in reduction of debt financings	(1,209,971)	(708,847)
Debt issuance costs	(3,159)	(2,740)
Security deposits and maintenance reserve receipts	93,377	125,727
Security deposits and maintenance reserve disbursements	(3,775)	(4,864)
Net cash provided by financing activities	846,406	769,639
Net decrease in cash	(78,480)	403,764
Cash, cash equivalents and restricted cash at beginning of period	780,017	1,108,292
Cash, cash equivalents and restricted cash at end of period	701,537	1,512,056
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest, including capitalized interest of $10,658 and $9,365 at March 31, 2023 and 2022, respectively	197,935	179,026
Cash paid for income taxes	3,571	3,446
Supplemental Disclosure of Noncash Activities
Buyer furnished equipment, capitalized interest and deposits on flight equipment purchases applied to acquisition of flight equipment	227,738	85,791
Cash dividends declared on common stock, not yet paid	$ 22,203	$ 21,136