Defined Benefit Pension and Other Postretirement Plans

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Defined Benefit Pension and Other Postretirement Plans

The following summarizes the components of net periodic benefit costs:



	Three Months Ended March 31,
	Pension Benefits						Other Benefits
(In millions)	2017			2016			2017			2016
Components of net periodic benefit cost:
Service cost	$	31		$	28		$	7		$	8
Interest cost	19			19			8			9
Expected return on plan assets	(26		)	(25		)	—			—
Amortization – prior service credit	(10		)	(11		)	(1		)	(1		)
– actuarial loss	9			10			—			1
– settlement loss	—			1			—			—
Net periodic benefit cost	$	23		$	22		$	14		$	17

During the three months ended March 31, 2017, we made no contributions to our funded pension plans. We have no required funding requirements for our funded pension plans for 2017, but may make voluntary contributions at our discretion. Benefit payments related to unfunded pension and other postretirement benefit plans were $2 million and $7 million, respectively, during the three months ended March 31, 2017.