Benefit Plans (Tables)

6 Months Ended

Jun. 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				Six Months Ended
	June 30,				June 30,
	2023		2022		2023		2022
(In millions)
Service cost					$	1	$	1
Interest cost	$	28	$	18	56		37
Expected return on plan assets	(32)		(40)		(64)		(83)
Amortization of unrecognized net loss	9		8		18		16
Settlements	1		1		1		2
Regulatory asset decrease			1				2
Net periodic (benefit) cost	$	6	$	(12)	$	12	$	(25)

	Other Postretirement Benefits
	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2023		2022		2023		2022
(In millions)
Interest cost			$	1	$	1	$	1
Expected return on plan assets			(1)		(1)		(1)
Net periodic benefit	$	—	$	—	$	—	$	—