v3.25.2
TiO2 segment information - Reconciliation of segment profit (loss) and Consolidated net income (loss) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Geographic Information [Line Items]        
Net sales $ 494.4 $ 500.5 $ 984.2 $ 979.3
Segment profit (5.7) 28.0 20.0 39.6
Corporate interest and dividend income 0.3 2.1 0.7 3.4
Marketable equity securities   (0.1) 1.0 (0.4)
Other components of net periodic pension and OPEB cost (0.6) (0.3) (1.1) (0.6)
Interest expense (12.8) (9.8) (24.4) (19.0)
Income tax expense (3.5) (8.5) (11.1) (12.0)
Net income (loss) (9.2) 19.5 8.9 27.6
Corporate non segment        
Geographic Information [Line Items]        
Corporate expenses (3.3) (3.7) (6.3) (7.2)
Corporate interest and dividend income 0.1 0.6 0.3 1.5
Single reportable segment | Operating segment        
Geographic Information [Line Items]        
Net sales 494.4 500.5 984.2 979.3
Segment profit 10.9 41.1 52.5 64.5
Marketable equity securities   0.1 (1.0) 0.4
Other components of net periodic pension and OPEB cost (0.6) (0.3) (1.1) (0.6)
Interest expense (12.8) (9.8) (24.4) (19.0)
Income tax expense $ (3.5) $ (8.5) $ (11.1) $ (12.0)