Quarterly report [Sections 13 or 15(d)]

Income taxes (Narrative) (Details)

v3.25.2
Income taxes (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income taxes        
Minimum ownership interest in subsidiaries for consolidated income tax return     80.00%  
Effective income tax rate     0.00%  
Income tax expense $ 0.0 $ 0.0 $ 0.0 $ 0.0