Flight equipment subject to operating lease - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Aug. 01, 2024 aircraft
Subsequent Event
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Number of aircraft under operating lease terminated remaining in Russia | aircraft		16
Flight Equipment
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Write-off of aircrafts | $	$ 771.5