v3.26.1
Retirement Benefit Plans - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Foreign Plan [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Benefit Plan, Service Cost $ 0.1 $ 0.0 $ 0.1 $ 0.0
Interest cost 1.4 1.5 2.9 2.9
Expected return on plan assets (1.6) (1.4) (3.3) (2.6)
Amortization of actuarial loss 0.6 0.4 1.3 0.8
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total 0.5 0.5 1.0 1.1
UNITED STATES        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Interest cost 0.4 0.5 0.9 1.1
Expected return on plan assets (0.4) (0.5) (0.8) (1.1)
Amortization of actuarial loss 0.4 0.5 0.8 0.9
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total $ 0.4 $ 0.5 $ 0.9 $ 0.9