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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2023

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

The components of net periodic benefit cost (credit) for the Corporation's qualified pension plan, non-qualified pension plan and postretirement benefit plan are as follows.


Qualified Defined Benefit Pension Plan	Three Months Ended March 31,
(in millions)	2023		2022
Service cost	$	8	$	9
Other components of net benefit credit:
Interest cost	21		16
Expected return on plan assets	(41)		(50)
Amortization of prior service credit	(4)		(4)
Amortization of net loss	8		5
Total other components of net benefit credit	(16)		(33)
Net periodic defined benefit credit	$	(8)	$	(24)


Non-Qualified Defined Benefit Pension Plan	Three Months Ended March 31,
(in millions)	2023		2022
Service cost	$	1	$	1
Other components of net benefit cost:
Interest cost	2		1
Amortization of prior service credit	(2)		(2)
Amortization of net loss	1		2
Total other components of net benefit cost	1		1
Net periodic defined benefit cost	$	2	$	2


Postretirement Benefit Plan	Three Months Ended March 31,
(in millions)	2023		2022
Other components of net benefit credit:

Expected return on plan assets	$	(1)	$	—




Net periodic defined benefit credit	$	(1)	$	—