Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2020

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Components of Accumulated Other Comprehensive Loss

The components of Accumulated other comprehensive loss on the Consolidated Balance Sheets at December 31, 2020 and December 31, 2019 and the changes during 2020 and 2019 are presented net of taxes in the following table.

(Thousands of dollars)	Foreign Currency Translation Gains (Losses)		Retirement and Postretirement Benefit Plan Adjustments		Deferred Loss on Interest Rate Derivative Hedges		Total
Balance at December 31, 2018	(419,852)		(182,036)		(7,899)		(609,787)
2018 components of other comprehensive income (loss):
Before reclassifications to income	66,600		(47,264)		—		19,336
Reclassifications to income	—		11,285	¹	5,005		16,290
Net other comprehensive income	66,600		(35,979)		5,005		35,626
Balance at December 31, 2019	(353,252)		(218,015)		(2,894)		(574,161)
2019 components of other comprehensive income (loss):
Before reclassifications to income	29,241		(70,815)		—		(41,574)
Reclassifications to income	—		13,198	¹	1,204	²	14,402
Net other comprehensive income (loss)	29,241		(57,617)		1,204		(27,172)
Balance at December 31, 2020	$	(324,011)	(275,632)		(1,690)		(601,333)

1 Reclassifications before taxes of $17,694 and $14,380 are included in the computation of net periodic benefit expense in 2020 and 2019, respectively.  See Note L for additional information.  Related income taxes of $4,496 and $3,095 are included in income tax expense in 2020 and 2019, respectively.

2 Reclassifications before taxes of $1,525 and $6,335 are included in Interest expense in 2020 and 2019, respectively.  Related income taxes of $321 and $1,330 are included in income tax expense in 2020 and 2019, respectively. See Note M for additional information.