Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Costs

The following summarizes the components of net periodic benefit costs:

	Three Months Ended June 30,
	Pension Benefits				Other Benefits
(In millions)	2020		2019		2020	2019
Components of net periodic benefit cost:
Service cost	83		60		9	8
Interest cost	24		27		9	10
Expected return on plan assets	(32	)	(31	)	—	—
Amortization – prior service credit	(12	)	(12	)	—	—
– actuarial loss	10		7		—	(1	)
– settlement loss	1		2		—	—
Net periodic benefit cost	74		53		18	17

	Six Months Ended June 30,
	Pension Benefits						Other Benefits
(In millions)	2020			2019			2020		2019
Components of net periodic benefit cost:
Service cost	$	152		$	118		$	18	$	16
Interest cost	49			55			17		19
Expected return on plan assets	(66		)	(63		)	—		—
Amortization – prior service credit	(23		)	(23		)	—		—
– actuarial loss	18			11			1		(1		)
– settlement loss	1			2			—		—
Net periodic benefit cost	$	131		$	100		$	36	$	34