Pension and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2014

General Discussion of Pension and Other Postretirement Benefits [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 June 30,
	United States Pension Benefits						Foreign Pension Benefits						Other Postretirement Benefits
Millions of dollars	2014			2013			2014			2013			2014			2013
Service cost	$	1		$	1		$	2		$	1		$	—		$	1
Interest cost	42			40			5			4			6			4
Expected return on plan assets	(48		)	(48		)	(3		)	(2		)	—			—
Amortization:
Actuarial loss	10			15			1			1			—			—
Prior service credit	(1		)	—			—			—			(9		)	(9		)
Settlement and curtailment loss	—			—			2			1			—			—
Net periodic benefit cost (credit)	$	4		$	8		$	7		$	5		$	(3	)	$	(4	)

	Six Months Ended June 30,
	United States Pension Benefits						Foreign Pension Benefits						Other Postretirement Benefits
Millions of dollars	2014			2013			2014			2013			2014			2013
Service cost	$	1		$	1		$	3		$	3		$	1		$	2
Interest cost	84			81			9			8			12			9
Expected return on plan assets	(96		)	(96		)	(6		)	(5		)	—			—
Amortization:
Actuarial loss	21			31			3			3			—			—
Prior service credit	(2		)	(1		)	—			—			(19		)	(19		)
Settlement and curtailment loss	—			—			2			1			—			—
Net periodic benefit cost (credit)	$	8		$	16		$	11		$	10		$	(6	)	$	(8	)