Defined Benefit Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost

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

	Three Months Ended June 30,
	Pension Benefits				Other Benefits
(In millions)	2021		2020		2021		2020
Service cost	$	4	$	5	$	—	$	—
Interest cost	2		2		1		—
Expected return on plan assets	(2)		(2)		—		—
Amortization:
– prior service credit	(1)		(2)		(4)		(5)
– actuarial loss	1		2		—		1
Net settlement loss(a)	5		14		—		—
Net curtailment gain(b)	—		(3)		—		(14)
Net periodic benefit costs (credits)(c)	$	9	$	16	$	(3)	$	(18)

	Six Months Ended June 30,
	Pension Benefits				Other Benefits
(In millions)	2021		2020		2021		2020
Service cost	$	8	$	10	$	—	$	—
Interest cost	4		5		1		1
Expected return on plan assets	(4)		(5)		—		—
Amortization:
– prior service credit	(3)		(4)		(8)		(9)
– actuarial loss	3		5		1		1
Net settlement loss(a)	5		16		—		—
Net curtailment gain(b)	—		(3)		—		(14)
Net periodic benefit costs (credits)(c)	$	13	$	24	$	(6)	$	(21)

(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)Related to workforce reductions, which reduced the future expected years of service for employees participating in the plans.

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