Postretirement Benefit Plans

6 Months Ended

Jun. 30, 2019

The components of net periodic benefit cost for our defined benefit pension plans are as follows:



	Three Months Ended						Six Months Ended
	June 30,						June 30,
(in millions)	2019			2018			2019			2018
Domestic defined benefit pension plans:
Service cost	$	—		$	1		$	1		$	2
Interest cost	1			1			2			2
Expected return on plan assets	(2		)	(1		)	(4		)	(3		)
Amortization of net actuarial loss	1			—			1			1
Net periodic benefit cost	$	—		$	1		$	—		$	2
International defined benefit pension plans:
Service cost	$	2		$	3		$	5		$	5
Interest cost	5			5			10			10
Expected return on plan assets	(9		)	(10		)	(18		)	(19		)
Amortization of net actuarial loss	2			3			4			5
Settlement/Curtailment	—			—			—			1
Net periodic benefit cost	$	—		$	1		$	1		$	2
Total net periodic benefit cost	$	—		$	2		$	1		$	4

The components of net periodic benefit cost other than the service cost component are included in the line item "Other non-operating income, net" in the Condensed Consolidated Income Statements.

The total net periodic benefit cost for other postretirement employee benefit plans was less than $1 million for both the three and six months ended June 30, 2019, including net credits recognized into other comprehensive income ("OCI") of $1 million for both the three and six months ended June 30, 2019. The total net periodic benefit cost for other postretirement employee benefit plans was less than $1 million for both the three and six months ended June 30, 2018, including net credits recognized in OCI of less than $1 million and $1 million, respectively, for the three and six months ended June 30, 2018.

We contributed $9 million and $12 million to our defined benefit plans during the six months ended June 30, 2019 and 2018, respectively. Additional contributions ranging between approximately $8 million and $14 million are expected during the remainder of 2019.