XML 28 R18.htm IDEA: XBRL DOCUMENT v3.24.3
Employee Benefits
9 Months Ended
Sep. 30, 2024
Retirement Benefits [Abstract]  
Employee Benefits
NOTE 10Employee Benefits
The components of net periodic benefit cost for the Company’s pension plans were:
 Three Months Ended September 30Nine Months Ended September 30
(Dollars in Millions)2024202320242023
Service cost$55 $56 $164 $168 
Interest cost94 93 282 278 
Expected return on plan assets(146)(137)(438)(410)
Prior service cost (credit) amortization(1)— (3)(1)
Actuarial loss (gain) amortization
Net periodic benefit cost(a)
$$13 $12 $38 
(a)Service cost is included in compensation and employee benefits expense on the Consolidated Statement of Income. All other components are included in other noninterest expense on the Consolidated Statement of Income.