Health Care, Pension and Other Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Components of net periodic benefit costs for pension and other employee benefit plans

Shown below are the components of the Company’s net periodic benefit cost (credit) for domestic defined benefit pension plans, foreign defined benefit pension plans and postretirement benefits other than pensions:

(Thousands of dollars)	Domestic Defined Benefit Pension Plans						Foreign Defined Benefit Pension Plans						Postretirement Benefits Other than Pensions
	2014			2013			2014			2013			2014			2013
Three Months Ended June 30:
Net periodic benefit cost (credit):
Service cost	$	5,637		$	5,397		$	1,548		$	1,160		$	608		$	766
Interest cost	6,525			4,267			2,694			1,903			3,196			3,045
Expected return on assets	(12,665		)	(10,342		)	(2,740		)	(1,782		)
Amortization of:
Prior service cost (credit)	459			455									(125		)	(82		)
Actuarial loss				3,488			355			442						984
Net periodic benefit cost (credit)	$	(44	)	$	3,265		$	1,857		$	1,723		$	3,679		$	4,713
Six Months Ended June 30:
Net periodic benefit cost:
Service cost	$	11,274		$	10,793		$	3,095		$	2,320		$	1,217		$	1,531
Interest cost	13,051			8,534			5,388			3,805			6,391			6,091
Expected return on assets	(25,331		)	(20,684		)	(5,480		)	(3,564		)
Amortization of:
Prior service cost (credit)	918			911									(251		)	(164		)
Actuarial loss				6,976			711			884						1,967
Net periodic benefit cost (credit)	$	(88	)	$	6,530		$	3,714		$	3,445		$	7,357		$	9,425