Flight equipment subject to operating lease - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) aircraft	Aug. 03, 2023 aircraft	Oct. 31, 2022 aircraft
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Number of managed aircraft terminating lease	8
Number of aircrafts returned from Russia			1
Subsequent Event
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Number of aircraft under operating lease terminated remaining in Russia		20
Flight Equipment
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Write-off of fleet | $	$ 791.0