XML 40 R30.htm IDEA: XBRL DOCUMENT v3.25.2
Pensions and Other Postretirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Net Periodic Benefit Cost
Components of net periodic benefit cost for the three and six months ended June 30, 2025 and 2024 were as follows:
Pension and Other Postretirement Benefits
Three Months EndedSix Months Ended
June 30,June 30,
(In millions)2025202420252024
Service cost$7.4 $7.8 $14.9 $15.7 
Interest cost16.3 16.7 32.5 33.3 
Expected return on plan assets(16.8)(16.9)(33.6)(33.8)
Amortization of prior service costs— 0.6 — 1.1 
Recognized net actuarial gains(2.9)(4.2)(5.8)(8.5)
Net periodic benefit cost$4.0 $4.0 $8.0 $7.8