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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 |  |

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