Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Components of net periodic cost (benefit)

The components of net periodic pension cost (benefit) are presented in the following table.

Three months ended March 31
(In millions)	2021		2020
Net periodic pension cost (benefit)
Interest cost on projected benefit obligation	$	15	$	20
Expected return on plan assets	(38)		(39)
Amortization of net actuarial (gain) loss	12		11
Settlement loss	—		1
Total net periodic pension cost (benefit)	$	(11)	$	(7)