Employee Retirement Plans

3 Months Ended

Mar. 31, 2019

Employee Retirement Plans [Abstract]

Employee Retirement Plans

8.  Employee Retirement Plans

The following table summarizes the components of net periodic benefit cost for Corning’s defined benefit pension and postretirement health care and life insurance plans (in millions):

	Pension benefits				Postretirement benefits
	Three months ended				Three months ended
	March 31,				March 31,
	2019		2018		2019		2018
Service cost	$	25	$	25	$	2	$	3
Interest cost		37		32		7		6
Expected return on plan assets		(43)		(47)
Amortization of prior service    cost (credit)		2		2		(2)		(1)
Total pension and postretirement    benefit expense	$	21	$	12	$	7	$	8

The components of net period benefit cost other than the service cost component are included in the line item “Other expense, net” in the consolidated statements of income.