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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Employee Benefit Plans Employee Benefit Plans
Net periodic benefit income from our pension plans included the following components for our pension benefits:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2024202320242023
Service cost$1,711 $1,503 $3,438 $2,997 
Interest cost25,324 26,136 50,689 52,253 
Expected return on plan assets(44,339)(41,263)(88,743)(82,503)
Amortization of prior service cost281 173 562 346 
Amortization of actuarial loss3,567 2,340 7,134 4,681 
Net periodic benefit income$(13,456)$(11,111)$(26,920)$(22,226)
Service cost is recorded in selling, administrative and other expenses in the Condensed Consolidated Statements of Income while all other components are recorded within other non-operating (income) expense. Pension benefits also include amounts related to supplemental retirement plans.