Flight equipment subject to operating lease - Schedule of Flight Equipment Subject to Operating Lease (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Movement in Property, Plant and Equipment [Roll Forward]
Depreciation	$ (299,019)	$ (277,260)
Flight equipment subject to operating leases reclassified to flight equipment held for sale	(60,572)	(276,094)
Transfer of flight equipment to investment in sales-type lease	(33,778)	$ (33,629)
Flight Equipment
Movement in Property, Plant and Equipment [Roll Forward]
Net book value, beginning balance	28,170,466
Purchase of flight equipment	830,016
Depreciation	(299,019)
Flight equipment subject to operating leases reclassified to flight equipment held for sale	(60,572)
Transfer of flight equipment to investment in sales-type lease	(33,778)
Net book value, ending balance	28,607,113
Accumulated depreciation	$ (6,268,070)