Pension Plans and Other Post Employment Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended March 31,
(In millions)	2019			2018
Defined Benefit Pension Plans:
Service cost	$	19		$	34
Interest cost	206			190
Expected return on plan assets	(296		)	(303		)
Amortization of unrecognized loss	1			—
Net periodic benefit credit	$	(70	)	$	(79	)
Other Post Employment Benefits:
Service cost	$	2		$	2
Interest cost	23			21
Net periodic benefit cost	$	25		$	23