Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2017

Retirement Benefits, Description [Abstract]

Schedule of Defined Benefit Plans Disclosures

The following table summarizes the components of net periodic pension cost and the cost of other postretirement benefits for the periods presented:



	Three Months Ended September 30,
	United States Pension Benefits						Foreign Pension Benefits						Other Postretirement Benefits
Millions of dollars	2017			2016			2017			2016			2017			2016
Service cost	$	1		$	1		$	1		$	1		$	1		$	1
Interest cost	34			37			6			7			4			5
Expected return on plan assets	(43		)	(47		)	(8		)	(7		)	—			—
Amortization:
Actuarial loss	12			12			2			1			—			—
Prior service credit	(1		)	—			—			—			(4		)	(3		)
Settlement and curtailment loss	—			—			—			1			—			—
Net periodic cost	$	3		$	3		$	1		$	3		$	1		$	3



	Nine Months Ended September 30,
	United States Pension Benefits						Foreign Pension Benefits						Other Postretirement Benefits
Millions of dollars	2017			2016			2017			2016			2017			2016
Service cost	$	2		$	2		$	4		$	4		$	5		$	5
Interest cost	101			111			17			21			12			13
Expected return on plan assets	(131		)	(140		)	(23		)	(23		)	—			—
Amortization:
Actuarial loss	37			35			5			3			—			—
Prior service credit	(2		)	(2		)	—			—			(11		)	(11		)
Settlement and curtailment loss	—			—			1			1			—			—
Net periodic cost	$	7		$	6		$	4		$	6		$	6		$	7

The following table summarizes the net periodic cost recognized in operating profit and interest and sundry (income) expense for the periods presented:



	Three Months Ended September 30,
	United States Pension Benefits				Foreign Pension Benefits				Other Postretirement Benefits
Millions of dollars	2017		2016		2017		2016		2017		2016
Operating profit (loss)	$	1	$	1	$	1	$	1	$	1	$	1
Interest and sundry (income) expense	2		2		—		2		—		2
Net periodic benefit cost (credit)	$	3	$	3	$	1	$	3	$	1	$	3



	Nine Months Ended September 30,
	United States Pension Benefits				Foreign Pension Benefits				Other Postretirement Benefits
Millions of dollars	2017		2016		2017		2016		2017		2016
Operating profit (loss)	$	2	$	2	$	4	$	4	$	5	$	5
Interest and sundry (income) expense	5		4		—		2		1		2
Net periodic benefit cost (credit)	$	7	$	6	$	4	$	6	$	6	$	7