v3.25.4
Retirement Benefit Plans - Changes in Other Comprehensive Income - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
United States [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Current year actuarial loss $ (1.7) $ (1.3) $ (1.2)
Amortization of actuarial loss (1.8) (2.0) (2.1)
Settlements and Curtailments 0.0 0.0 0.0
Total recognized in other comprehensive income (loss) (3.5) (3.3) (3.3)
Interest cost 2.2 2.3 2.5
Expected return on plan assets (2.1) (2.7) (2.5)
Amortization of actuarial loss 1.8 2.0 2.1
Settlements 0.0 0.0 0.0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 1.9 1.6 2.1
Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Current year actuarial loss 0.1 0.6 (0.2)
Amortization of actuarial loss (1.6) (1.4) (0.7)
Amortization of prior service credit (0.1) (0.1) (0.1)
Total recognized in other comprehensive income (loss) (1.6) (0.9) (1.0)
Interest cost 5.8 5.3 5.4
Expected return on plan assets (5.4) (7.2) (7.4)
Amortization of actuarial loss 1.6 1.4 0.7
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 2.2 $ (0.3) $ (1.2)