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Benefit Plans
9 Months Ended
Sep. 30, 2023
Retirement Benefits [Abstract]  
Benefit Plans Benefit Plans
The components of net periodic (benefit) cost for defined benefit pension plans are summarized in the following table:
Three Months Ended September 30,Nine Months Ended September 30,
(Dollars in millions)Income Statement Location2023202220232022
Service costPersonnel expense$77 $139 $263 $418 
Interest costOther expense112 87 334 263 
Estimated return on plan assetsOther expense(226)(269)(682)(808)
Amortization and otherOther expense19 10 59 27 
Net periodic (benefit) cost$(18)$(33)$(26)$(100)

Truist makes contributions to the qualified pension plans up to the maximum amount deductible for federal income tax purposes. Discretionary contributions totaling $1.3 billion were made to the Truist pension plan during the nine months ended September 30, 2023.