Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Net Periodic (Benefit) Cost Components

The following tables present the components of net periodic (benefit) cost for the defined benefit plans:

	Pension Benefits
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
(In millions)
Service cost	$	1	$	1	$	2	$	2
Interest cost	28		20		84		57
Expected return on plan assets	(32)		(41)		(96)		(124)
Amortization of unrecognized net loss	9		8		27		24
Settlements	47				48		2
Regulatory asset decrease			(1)				1
Net periodic (benefit) cost	$	53	$	(13)	$	65	$	(38)

During the third quarter of 2023, the Company terminated a non-contributory defined benefit plan through lump sum settlement payments to certain participants and the transfer of the remaining liability to a third party insurance company through the purchase of group annuity contracts. The Company recorded a settlement expense of $47 million ($37 million after-tax) to recognize unrealized losses which were previously included in AOCI.

	Other Postretirement Benefits
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
(In millions)
Interest cost					$	1	$	1
Expected return on plan assets	$	(1)			(2)		(1)
Amortization of unrecognized net loss	1				1
Net periodic benefit	$	—	$	—	$	—	$	—