(11) PENSION PLAN AND OTHER POSTRETIREMENT BENEFITS

The Company maintains defined pension and postretirement benefit plans, which cover substantially all of the Company’s employees. Net periodic pension costs include the following components for the three months ended March 31, 2018 and 2017:


		Pension Benefits
	Condensed Consolidated Statements of	For the three months ended
	Operations Classification of	March 31,
(in millions)	Net Periodic Benefit Cost (1)	2018		2017
Service cost	General and administrative expenses	$	3	$	2
Interest cost	Other Income (Loss), Net		2		1
Expected return on plan assets	Other Income (Loss), Net		(2)		(1)
Amortization of prior service cost	Other Income (Loss), Net		−		−
Amortization of net loss	Other Income (Loss), Net		–		1
Net periodic benefit cost		$	3	$	3

(1)

In the first quarter of 2018, the Company adopted Accounting Standards Update No. 2017-07, which requires the service cost component to be disaggregated from the other components of net benefit cost, which are to be presented outside of income from operations. See Note 15 – New Accounting Pronouncements for more information regarding this update.

The Company’s other postretirement benefit plan had a net periodic benefit cost of $1 million for the three months ended March 31, 2018 and 2017.

As of March 31, 2018, the Company has contributed $3 million to the pension and other postretirement benefit plans in 2018. The Company expects to contribute an additional $9 million to its pension plan during the remainder of 2018. The Company recognized a liability of $41 million and $18 million related to its pension and other postretirement benefits, respectively, as of March 31, 2018, compared to a liability of $42 million and $17 million as of December 31, 2017.

The Company maintains a non-qualified deferred compensation supplemental retirement savings plan (“Non-Qualified Plan”) for certain key employees who may elect to defer and contribute a portion of their compensation, as permitted by the Non-Qualified Plan. Shares of the Company’s common stock purchased under the terms of the Non-Qualified Plan are presented as treasury stock and totaled 31,269 shares at March 31, 2018 and December 31, 2017.