v3.26.1
Administrative expenses (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Expense by nature    
Cash flow projection period for assessment of withholding tax asset recoverability 5 years  
Expense from long-term employee benefits due to changes in expected vesting and settlement amounts in connection with merger agreement $ 17.5 $ 0.0
Administrative expense    
Expense by nature    
Staff costs 73.7 39.8
Net loss allowance on trade receivables 4.0 0.3
Professional fees 13.7 9.4
Facilities, short term rental and upkeep 7.7 7.2
Travel costs 2.5 2.3
Depreciation 1.4 2.4
Amortization 0.2 0.2
Net gain on disposal of property, plant and equipment and right-of-use assets (1.5) (1.0)
Business combination costs 9.2 0.9
Net impairment loss/(reversal) of withholding tax receivables 5.5 (12.4)
Other 4.3 3.6
Total 120.7 $ 52.7
Expense from acceleration of vesting of share-based payment awards 15.6  
Expense from long-term employee benefits due to changes in expected vesting and settlement amounts in connection with merger agreement $ 17.5