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Employee Pension and Other Postretirement Benefits
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Employee Pension and Other Postretirement Benefits
Employee Pension and Other Postretirement Benefits
The following table summarizes the components of net periodic benefit cost for the three months ended March 31, 2020 and 2019. The components of net periodic benefit cost other than the service cost component are included in other noninterest expense in the income statement.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pension Benefits
 
Other Postretirement Benefits
 
Superannuation,
SERP and
ESBP
 
 
For the Three Months Ended March 31,
 
For the Three Months Ended March 31,
 
For the Three Months Ended March 31,
(Dollars in millions)
 
2020
 
2019
 
2020
 
2019
 
2020
 
2019
Components of net periodic benefit cost:
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
 
$
21

 
$
19

 
$
—

 
$
1

 
$
—

 
$
—

Interest cost
 
24

 
29

 
2

 
2

 
1

 
1

Expected return on plan assets
 
(67
)
 
(64
)
 
(5
)
 
(4
)
 
—

 
—

Amortization of prior service credit
 
(7
)
 
(6
)
 
—

 
(4
)
 
—

 
—

Recognized net actuarial loss
 
28

 
15

 
—

 
2

 
1

 
1

Total net periodic benefit (income) cost          
 
$
(1
)
 
$
(7
)
 
$
(3
)
 
$
(3
)
 
$
2

 
$
2