v3.25.4
Income taxes - Movement in deferred tax assets and liabilities during the year (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Beginning balance $ (20.1) $ (3.5)
Recognised in profit or loss (151.5) (19.3)
Recognised in other comprehensive income (5.4) 2.7
Ending balance (177.0) (20.1)
Fixed assets (including right of use assets)    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Beginning balance (591.7) [1] (428.9)
Recognised in profit or loss (208.1) (162.8)
Recognised in other comprehensive income (0.1)  
Ending balance [1] (799.9) (591.7)
Financial instruments and lease liabilities    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Beginning balance 549.4 405.0
Recognised in profit or loss (11.3) 141.5
Recognised in other comprehensive income (4.7) 2.9
Ending balance 533.4 549.4
Employee benefits    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Beginning balance 13.4 13.4
Recognised in profit or loss 5.3 0.3
Recognised in other comprehensive income   (0.3)
Ending balance 18.7 13.4
Accumulated tax losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Beginning balance 0.5 0.4
Recognised in profit or loss 57.8 0.1
Ending balance 58.3 0.5
Other items    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Beginning balance 8.3 6.6
Recognised in profit or loss 4.8 1.6
Recognised in other comprehensive income (0.6) 0.1
Ending balance $ 12.5 $ 8.3
[1] In accordance with Israeli Income Tax Regulations, the Group is entitled to deduct depreciation for vessels and related equipment at a higher rate than recorded in its financial statements.