CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net (loss)/income	$ (352,716)	$ 177,514
Adjustments to reconcile net (loss)/income to net cash provided by operating activities:
Depreciation	470,591	426,782
Write-off of Russian fleet	802,352	0
Stock-based compensation expense	4,035	12,108
Deferred taxes	(104,963)	38,985
Amortization of debt discounts and issuance costs	26,610	24,538
Amortization of prepaid lease costs	23,355	22,267
Gain on aircraft sales, trading and other activity	(71,753)	(1,245)
Changes in operating assets and liabilities:
Other assets	(147,685)	(96,234)
Accrued interest and other payables	26,590	4,751
Rentals received in advance	12,423	(6,801)
Net cash provided by operating activities	688,839	602,665
Investing Activities
Acquisition of flight equipment under operating lease	(1,569,310)	(1,098,174)
Payments for deposits on flight equipment purchases	(345,643)	(202,938)
Proceeds from aircraft sales, trading and other activity	1,166	2,042
Acquisition of aircraft furnishings, equipment and other assets	(106,655)	(102,303)
Net cash used in investing activities	(2,020,442)	(1,401,373)
Financing Activities
Issuance of common stock upon exercise of options	0	1,439
Cash dividends paid on Class A common stock	(42,223)	(36,475)
Common shares repurchased	(150,000)	0
Net proceeds from preferred stock issuance	0	295,428
Cash dividends paid on preferred stock	(20,850)	(11,679)
Tax withholdings on stock-based compensation	(9,027)	(7,442)
Net change in unsecured revolving facilities	520,000	0
Proceeds from debt financings	1,497,615	2,574,089
Payments in reduction of debt financings	(718,687)	(2,576,841)
Debt issuance costs	(5,613)	(7,937)
Security deposits and maintenance reserve receipts	198,763	67,289
Security deposits and maintenance reserve disbursements	(12,819)	(24,170)
Net cash provided by financing activities	1,257,159	273,701
Net decrease in cash	(74,444)	(525,007)
Cash, cash equivalents and restricted cash at beginning of period	1,108,292	1,757,767
Cash, cash equivalents and restricted cash at end of period	1,033,848	1,232,760
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest, including capitalized interest of $19,127 and $26,116 at June 30, 2022 and 2021, respectively	254,349	262,949
Cash paid for income taxes	3,557	2,491
Supplemental Disclosure of Noncash Activities
Buyer furnished equipment, capitalized interest and deposits on flight equipment purchases applied to acquisition of flight equipment	343,794	449,486
Cash dividends declared, not yet paid	$ 20,511	$ 18,263