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Pension And Other Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2022
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 months ended March 31, 2022 and 2021:
Pension BenefitsOPEB
Three Months Ended March 31, (in millions)
2022202120222021
Components of Net Periodic Benefit (Income) Cost(1)
Service cost$7.1 $7.6 $1.6 $1.5 
Interest cost9.4 7.7 3.0 2.5 
Expected return on assets(22.9)(25.8)(4.0)(3.8)
Amortization of prior service credit — (0.6)(0.6)
Recognized actuarial loss4.5 5.3 0.7 1.2 
Settlement loss 3.3  — 
Total Net Periodic Benefit (Income) Cost $(1.9)$(1.9)$0.7 $0.8 
(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).