v3.26.1
Accounting policies - Performance obligations (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2026
USD ($)
Revenue remaining performance obligation expected timing of satisfaction  
Amount recognized revenue included in the contract liability balance $ 1.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-12-31  
Revenue remaining performance obligation expected timing of satisfaction  
Revenue remaining performance obligation, amount $ 11.2
Revenue remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-12-31  
Revenue remaining performance obligation expected timing of satisfaction  
Revenue remaining performance obligation, amount $ 144.8
Revenue remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-12-31  
Revenue remaining performance obligation expected timing of satisfaction  
Revenue remaining performance obligation, amount $ 133.6
Revenue remaining performance obligation, expected timing of satisfaction, period 2 years