Defined Benefit Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Costs (Credits)

The following table summarizes the components of net periodic benefit costs (credits):

	Three Months Ended June 30,
	Pension Benefits				Other Benefits
(In millions)	2023		2022		2023		2022
Service cost	$	4	$	3	$	—	$	—
Interest cost	3		2		—		1
Expected return on plan assets	(2)		(3)		—		—
Amortization:
– prior service credit	(1)		(1)		(4)		(4)
– actuarial loss	—		1		1		—
Net settlement loss(a)	—		—		—		—
Net periodic benefit costs (credits)(b)	$	4	$	2	$	(3)	$	(3)

	Six Months Ended June 30,
	Pension Benefits				Other Benefits
(In millions)	2023		2022		2023		2022
Service cost	$	7	$	7	$	—	$	—
Interest cost	6		4		1		1
Expected return on plan assets	(4)		(5)		—		—
Amortization:
– prior service credit	(3)		(3)		(8)		(8)
– actuarial loss	—		1		1		1
Net settlement loss(a)	1		—		—		—
Net periodic benefit costs (credits)(b)	$	7	$	4	$	(6)	$	(6)

(a)Settlements are recognized as they occur, once it is probable that lump sum payments from a plan for a given year will exceed the plan’s total service and interest cost for that year.

(b)Net periodic benefit costs (credits) reflects a calculated market-related value of plan assets which recognizes changes in fair value over three years.