Income Tax - Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets
Net operating losses	$ 127,591	$ 24,206
Foreign tax credit	78,286	60,160
Rents received in advance	26,702	28,007
Other	19,743	5,383
Equity compensation	4,462	3,386
Accrued bonus	4,349	1,126
Total deferred tax assets	261,133	122,268
Deferred tax liabilities
Aircraft depreciation	(1,219,061)	(995,023)
Straight-line rents	(55,342)	(43,649)
Total deferred tax liabilities	(1,274,403)	(1,038,672)
Net deferred tax assets/(liabilities)	$ (1,013,270)	$ (916,404)