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Accumulated Other Comprehensive Loss
 3 Months Ended
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss
The components of Accumulated other comprehensive loss on the Consolidated Balance Sheets at December 31, 2019 and March 31, 2020 and the changes during the three-month period ended March 31, 2020, 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, 2019
$
(353,252
)
 
(218,015
)
 
(2,894
)
 
(574,161
)
Components of other comprehensive income (loss):
 
 
 
 
 
 
 
Before reclassifications to income and retained earnings
(118,411
)
 
(13,054
)
 
—

 
(131,465
)
Reclassifications to income
—

 
3,343

¹
299

²
3,642

Net other comprehensive income (loss)
(118,411
)
 
(9,711
)
 
299

 
(127,823
)
Balance at March 31, 2020
$
(471,663
)
 
(227,726
)
 
(2,595
)
 
(701,984
)

1 Reclassifications before taxes of $4,250 are included in the computation of net periodic benefit expense for the three-month period ended March 31, 2020.  See Note H for additional information.  Related income taxes of $907 are included in Income tax expense (benefit) for the three-month period ended March 31, 2020.
2 Reclassifications before taxes of $379 are included in Interest expense, net, for the three-month period ended March 31, 2020.  Related income taxes of $80 are included in Income tax expense (benefit) for the three-month period ended March 31, 2020.  See Note L for additional information.