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CONSOLIDATED AND COMBINED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net income before allocation to noncontrolling interest $ 36.2 $ 25.0 $ 43.0 $ 46.7
Components of other comprehensive (loss) income, net of tax        
Currency translation adjustment (1.5) 50.0 (12.3) 81.1
Changes in pension and postretirement plan assets and benefit obligation, net of tax (0.2) (0.3) (0.4) (0.5)
Other comprehensive (loss) income, net of tax (1.7) 49.7 (12.7) 80.6
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 34.5 74.7 30.3 127.3
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest 0.8 0.1 1.2 0.1
Comprehensive income attributable to common shareholders $ 33.7 $ 74.6 $ 29.1 $ 127.2