XML 78 R40.htm IDEA: XBRL DOCUMENT v3.25.0.1
Summary of significant accounting policies - Foreign currency and currency translation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Summary of significant accounting policies      
Foreign exchange gain (loss) $ (0.7) $ (0.6) $ (0.6)