Defined Benefit Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2020

Retirement Benefits [Abstract]

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

Schedule of Net Periodic Benefit Cost

The following summarizes the components of net periodic benefit cost:

	Three Months Ended March 31,
	Pension Benefits						Other Benefits
(In millions)	2020			2019(c)			2020			2019
Service cost	$	5		$	4		$	—		$	—
Interest cost	3			7			1			1
Expected return on plan assets	(3		)	(8		)	—			—
Amortization:
– prior service cost (credit)	(2		)	(2		)	(4		)	(4		)
– actuarial loss	3			2			—			—
Net settlement loss(a)	2			—			—			—
Net periodic benefit cost(b)	$	8		$	3		$	(3	)	$	(3	)

^(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 cost reflects a calculated market-related value of plan assets which recognizes changes in fair value over three years.

^(c)  Includes amounts related to the noncontributory defined benefit pension plan covering U.K. employees, prior to the plan being transferred to the buyer upon sale of the U.K. asset on July 1, 2019.