v3.26.3
Variable interest entities (Details) - USD ($)
$ in Millions
Mar. 30, 2026
Sep. 30, 2026
Dec. 31, 2025
Variable Interest Entity [Line Items]      
Debt, carrying value   $ 2,611.3 $ 2,658.8
Equity method investments   5.4 0.0
Variable Interest Entity, Primary Beneficiary      
Variable Interest Entity [Line Items]      
Debt, carrying value   33.7 $ 35.7
Variable Interest Entity, Not Primary Beneficiary | Nordic LuxCo      
Variable Interest Entity [Line Items]      
Variable interest entity, qualitative or quantitative information, ownership percentage 24.90%    
Equity method investments   5.4  
Variable interest entity, maximum loss exposure   $ 5.4