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Derivative financial instruments - Fair value (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Derivatives |  |
Derivative financial instruments |  |
Derivative financial instruments at fair value | $ 20,790 | $ (66,028)
Embedded options within listed bonds |  |
Derivative financial instruments |  |
Derivative financial instruments at fair value | 31,170 | 1,540
Interest rate caps |  |
Derivative financial instruments |  |
Derivative financial instruments at fair value | 157 | 565
Foreign exchange swaps |  |
Derivative financial instruments |  |
Derivative financial instruments at fair value | $ (10,537) | $ (68,133)

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