v3.25.2
Pension and Other Benefits (Tables)
 6 Months Ended
Jun. 30, 2025
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Schedule of Net Pension and Other Benefit Costs
The following table sets forth the components of net pension and other benefit costs for the three and six months ended June 30, 2025 and 2024 (in millions):
 Pension BenefitsOther Benefits
 2025202420252024
Three Months Ended June 30,    
Service cost$0.1 $0.2 $— $— 
Interest cost8.8 8.3 0.2 0.2 
Expected return on plan assets(7.1)(7.6)— — 
Amortization of prior service cost0.1 0.1 — — 
Amortization of actuarial losses (gains)2.8 2.3 (0.2)(0.1)
NET PERIODIC BENEFIT COST$4.7 $3.3 $— $0.1 
Six Months Ended June 30,
Service cost$0.2 $0.3 $— $— 
Interest cost17.6 16.6 0.4 0.4 
Expected return on plan assets(14.2)(15.3)— — 
Amortization of prior service cost0.2 0.2 — — 
Amortization of actuarial losses (gains)5.9 5.4 (0.3)(0.2)
NET PERIODIC BENEFIT COST$9.7 $7.2 $0.1 $0.2