Retirement Benefit Plans (Expected Benefit Payments) (Details) $ in Millions	Dec. 31, 2025 USD ($)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
2027	$ 0.5
2028	0.5
2029	0.4
2030	0.4
2031	0.4
2032 - 2036	1.5
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
2027	0.2
2028	0.2
2029	0.2
2030	0.2
2031	0.2
2032 - 2036	$ 0.6