Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Loss [Abstract]

Components of Accumulated Other Comprehensive Loss

					Deferred
			Retirement		Loss on
		Foreign	and		Interest
		Currency	Postretirement		Rate
		Translation	Benefit Plan		Derivative
(Thousands of dollars)		Gains (Losses)	Adjustments		Hedges		Total
Balance at December 31, 2017	$	(274,830)	(178,987)		(8,426)		(462,243)
2018 components of other comprehensive income (loss):
Before reclassifications to income and retained earnings		(87,185)	(32,159)		(1,815)		(121,159)
Reclassifications to income		–	7,108	1	1,171	2	8,279
Net other comprehensive loss		(87,185)	(25,051)		(644)		(112,880)
Balance at June 30, 2018	$	(362,015)	(204,038)		(9,070)		(575,123)

1Reclassifications before taxes of $8,851 are included in the computation of net periodic benefit expense for the six-month period ended June 30, 2018.  See Note H for additional information.  Related income taxes of $1,743 are included in Income tax expense (benefit) for the six-month period ended June 30, 2018.

2Reclassifications before taxes of $1,482 are included in Interest expense, net, for the six-month period ended June 30, 2018.  Related income taxes of $311 are included in Income tax expense (benefit) for the six-month period ended June 30, 2018.  See Note L for additional information.