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Changes in Cumulative Other Comprehensive Loss (Tables)
 9 Months Ended
Sep. 30, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Changes in cumulative other comprehensive loss
The following tables summarize the changes in Cumulative other comprehensive loss for the nine months ended September 30, 2017 and 2016:
 
 
 
 
 
 
 
 
 
 
(Thousands of dollars)
Foreign Currency Translation Adjustments
 
Pension and Other Postretirement Benefit Adjustments
 
Unrealized Net Gains on Available-for-Sale Securities
 
Unrealized Net Gains (Losses) on Cash Flow Hedges
 
Total Cumulative Other Comprehensive (Loss) Income
Balance at December 31, 2016
$
(501,277
)
 
$
(125,096
)
 
$
1,015

 
$
85,007

 
$
(540,351
)
Amounts recognized in Other comprehensive loss (1)
119,274

 
 
 
1,513

 
(30,754
)
 
90,033

Amounts reclassified from Other comprehensive loss (2)


 
794

 
(844
)
 
(1,933
)
 
(1,983
)
Net change
119,274

 
794

 
669

 
(32,687
)
 
88,050

Balance at September 30, 2017
$
(382,003
)
 
$
(124,302
)
 
$
1,684

 
$
52,320

 
$
(452,301
)

(1) Net of taxes of $(931) for unrealized net gains on available-for-sale securities and $18,895 for unrealized net losses on cash flow hedges.

(2) Net of taxes of $(299) for pension and other postretirement benefit adjustments, $518 for realized gains on the sale of available-for-sale securities and $1,188 for realized gains on cash flow hedges.

 
 
 
 
 
 
 
 
 
 
(Thousands of dollars)
Foreign Currency Translation Adjustments
 
Pension and Other Postretirement Benefit Adjustments
 
Unrealized Net (Losses) Gains on Available-for-Sale Securities
 
Unrealized Net Losses on Cash Flow Hedges
 
Total Cumulative Other Comprehensive (Loss) Income
Balance at December 31, 2015
$
(482,629
)
 
$
(104,346
)
 
$
(120
)
 
 
 
$
(587,095
)
Amounts recognized in Other comprehensive loss (3)
24,702

 
 
 
822

 
$
(97,223
)
 
(71,699
)
Amounts reclassified from Other comprehensive loss (4)
 
 
474

 
99

 
 
 
573

Net change
24,702

 
474

 
921

 
(97,223
)
 
(71,126
)
Balance at September 30, 2016
$
(457,927
)
 
$
(103,872
)
 
$
801

 
$
(97,223
)
 
$
(658,221
)


(3) Net of taxes of $(509) for unrealized net gains on available-for-sale securities and $60,093 for unrealized net losses on cash flow hedges.
(4) Net of taxes of $10 for pension and other postretirement benefit adjustments and $(61) for realized losses on the sale of available-for-sale securities.