v3.26.1
Pension And Other Postretirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2026
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]  
Components Of The Plans' Net Periodic Benefits Cost
The following table provides the components of the plans' actuarially determined net periodic benefit cost for the three and six months ended June 30, 2026 and 2025:
Pension BenefitsOPEB
Three Months Ended June 30, (in millions)
2026202520262025
Components of Net Periodic Benefit Cost(1)
Service cost$5.2 $4.9 $0.9 $1.0 
Interest cost14.1 16.0 4.6 5.6 
Expected return on assets(22.5)(23.1)(4.2)(4.2)
Amortization of prior service credit— — (1.1)(0.4)
Recognized actuarial loss5.9 6.4 — 0.4 
Total Net Periodic Benefit Cost $2.7 $4.2 $0.2 $2.4 
(1)The service cost component and all non-service cost components of net periodic benefit (income) cost are presented in "Operation and maintenance" and "Other, net," respectively, on the Condensed Statements of Consolidated Income (unaudited).