7. Benefit Plans

The Company and its subsidiaries have several non-contributory defined benefit plans and postretirement benefit plans covering eligible employees and retirees.

The following table presents the components of net periodic (benefit) cost for the plans:


	Pension Benefits				Other Postretirement Benefits

Three Months Ended March 31	2018		2017		2018		2017

(In millions)

Service cost	$	2	$	2
Interest cost		27		30	$	1	$	1
Expected return on plan assets		(45)		(43)		(1)		(1)
Amortization of unrecognized net loss		11		11
Amortization of unrecognized prior service benefit						(1)		(1)
Settlement charge		4		2

Net periodic (benefit) cost	$	(1)	$	2	$	(1)	$	(1)