Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2021

Benefit Plans [Abstract]

Components of Net Periodic Benefit

The following table presents the components of net periodic benefit for these plans:

	Pension Benefits						Other Postretirement Benefits
Three Months Ended March 31	2021			2020			2021			2020
(In millions)
Service cost	$	1		$	1
Interest cost		18			23
Expected return on plan assets		(43	)		(43	)	$	(1	)	$	(1	)
Amortization of unrecognized net loss		12			11
Settlement charge					4
Net periodic benefit	$	(12	)	$	(4	)	$	(1	)	$	(1	)