PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS

The components of the net periodic cost for the pension and postretirement benefit plans for the three and six months ended March 31, 2018, and April 1, 2017, are as follows (in millions):



	Pension Plans
	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017

Service cost	$	2		$	3		$	4		$	6
Interest cost	16			16			32			32
Expected return on plan assets	(15		)	(14		)	(31		)	(29		)
Amortization of:
Net actuarial loss	1			2			2			4
Settlement (gain) loss	—			2			—			2
Net periodic cost	$	4		$	9		$	7		$	15



	Postretirement Benefit Plans
	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017

Interest cost	$	1		$	1		$	1		$	1
Amortization of:
Prior service credit	(6		)	(6		)	(12		)	(12		)
Net periodic cost (credit)	$	(5	)	$	(5	)	$	(11	)	$	(11	)

We made lump-sum settlement payments of $4 million and $5 million for the six months ended March 31, 2018 and April 1, 2017, respectively, to certain deferred vested participants within our respective non-qualified and qualified pension plans.

We contributed $8 million and $13 million to our pension plans for the three months ended March 31, 2018, and April 1, 2017, respectively. We contributed $13 million and $22 million to our pension plans for the six months ended March 31, 2018, and April 1, 2017, respectively. We expect to contribute an additional $43 million during the remainder of fiscal 2018. The amount of contributions made to pension plans in any year is dependent upon a number of factors, including minimum funding requirements in the jurisdictions in which we operate. As a result, the actual funding in fiscal 2018 may differ from the current estimate.