v3.25.4
Retirement Benefit Plans
 12 Months Ended
Dec. 31, 2025
Defined Benefit Plan, Assumptions [Table Text Block]
 202520242023
U.S. Plans   
Weighted average discount rates4.97%5.43%5.03%
Expected long-term rate of return on assets4.00%5.00%5.50%
Cash balance interest crediting rate
5.00%-6.73%
5.00%-6.73%
3.50%-5.73%
Non-U.S. Plans
Weighted average discount rates
3.09%-5.40%
2.93%-5.40%
3.08%-4.50%
Rate of increase in compensation levels
2.00%-2.80%
2.00%-2.80%
2.60%-3.00%
Expected long-term rate of return on assets
4.00%-4.90%
3.50%-3.60%
3.30%-4.50%
Schedule of Net Benefit Costs [Table Text Block]
 202520242023
U.S. Plans   
Interest cost$2.2 $2.3 $2.5 
Expected return on plan assets(2.1)(2.7)(2.5)
Amortization of actuarial loss1.8 2.0 2.1 
Settlements— — — 
Net periodic pension expense$1.9 $1.6 $2.1 
Non-U.S. Plans 
Service cost$0.1 $0.1 $— 
Interest cost5.8 5.3 5.4 
Expected return on plan assets(5.4)(7.2)(7.4)
Amortization of actuarial loss1.6 1.4 0.7 
Amortization of prior service cost0.1 0.1 0.1 
Net periodic pension benefit (expense)$2.2 $(0.3)$(1.2)
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
 202520242023
U.S. Plans   
Current year actuarial (gain)$(1.7)$(1.3)$(1.2)
Amortization of actuarial loss(1.8)(2.0)(2.1)
Settlements— — — 
Total recognized in other comprehensive income (loss)$(3.5)$(3.3)$(3.3)
Non-U.S. Plans 
Current year actuarial (gain) loss$0.1 $0.6 $(0.2)
Amortization of actuarial loss(1.6)(1.4)(0.7)
Amortization of prior service cost(0.1)(0.1)(0.1)
Total recognized in other comprehensive income (loss)$(1.6)$(0.9)$(1.0)
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]
 20252024
 U.S. PlansNon-U.S.
Plans		U.S. PlansNon-U.S.
Plans
Change in benefit obligation    
Projected benefit obligation at beginning of year$43.8 $112.0 $48.3 $126.0 
Service cost— 0.1 — 0.1 
Interest cost2.2 5.8 2.3 5.3 
Actuarial (gain) loss0.2 (3.5)(1.6)(10.4)
Benefits paid(5.9)(7.4)(5.2)(7.0)
Employee contributions— 0.1 — 0.1 
Foreign currency exchange rate changes— 8.4 — (2.1)
Projected benefit obligation at end of year$40.3 $115.5 $43.8 $112.0 
Accumulated benefit obligation at end of year$40.3 $114.2 $43.8 $110.6 
 20252024
 U.S. PlansNon-U.S.
Plans		U.S. PlansNon-U.S.
Plans
Change in plan assets  
Fair value of plan assets at beginning of year$44.9 $126.2 $47.9 $139.0 
Actual return on plan assets4.0 1.8 2.2 (4.0)
Employer contributions— 0.2 — 0.2 
Employee contributions— 0.1 — 0.1 
Benefits paid(5.9)(7.4)(5.2)(7.0)
Foreign currency exchange rate changes— 9.4 — (2.1)
Fair value of plan assets at end of year$43.0 $130.3 $44.9 $126.2 
Funded status at end of year$2.7 $14.8 $1.1 $14.2 
Amounts recognized in the consolidated balance sheets consist of:  
Noncurrent assets$2.7 $16.5 $1.1 $14.1 
Noncurrent liabilities— (1.7)— 0.1 
$2.7 $14.8 $1.1 $14.2 
Components of accumulated other comprehensive income (loss) consist of:
Actuarial loss$22.4 $53.2 $25.9 $54.7 
Prior service cost— 1.3 — 1.3 
Deferred taxes(8.3)(13.0)(8.3)(13.3)
Foreign currency translation adjustment— 2.4 — 2.8 
 $14.1 $43.9 $17.6 $45.5 
Schedule of Expected Benefit Payments [Table Text Block]
 U.S. PlansNon-U.S. Plans
2026$4.8 $7.9 
20274.5 8.1 
20284.2 8.2 
20293.9 8.4 
20303.8 8.7 
2031 - 203514.9 46.2 
 $36.1 $87.5 
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Level 1Level 2
 2025202420252024
Insurance contracts$— $— $111.6 $— 
Fixed income securities42.6 31.3 13.4 113.9 
U.S. equity securities— 9.1 — — 
Non-U.S., non-U.K. equity securities— 4.0 — — 
Money market0.4 0.5 5.3 12.3 
Total$43.0 $44.9 $130.3 $126.2 
United States [Member]  
Defined Benefit Plan, Plan Assets, Allocation
 2025
Actual
Allocation		2024
Actual
Allocation		Target Allocation
Fixed income securities98.9%69.6%100%
U.S. equity securities—%20.4%—%
Non-U.S. equity securities—%8.9%—%
Money market1.1%1.1%—%
Foreign Plan [Member]  
Defined Benefit Plan, Plan Assets, Allocation
 2025
Actual
Allocation		2024
Actual
Allocation		Target Allocation
Insurance contracts93.5%—%98.0%
Fixed income securities2.0%89.4%2%
Money market4.5%10.6%—%