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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss) for the years ended December 31, 2018, 2017 and 2016 were as follows:
 
Amounts Reclassified from AOCI (a)
 
Years Ended December 31,
 
2018
 
2017
 
2016
Gain (loss) on cash flow hedges
 
 
 
 
 
Revenue
$
11

 
$
(179
)
 
$
68

Cost of sales
51

 
(32
)
 
(222
)
Interest expense
(1,183
)
 
(2,028
)
 
(2,028
)
Loss on extinguishment of debt
(1,267
)
 
—

 
—

Total before tax
(2,388
)
 
(2,239
)
 
(2,182
)
Tax benefit
(941
)
 
(872
)
 
(850
)
Net of tax
$
(1,447
)
 
$
(1,367
)
 
$
(1,332
)
 
 
 
 
 
 
Gain (loss) on available for sale securities
 
 
 
 
 
Interest income
$
3,244

 
$
(520
)
 
$
(1,126
)
Tax (benefit) provision
821

 
(201
)
 
(433
)
Net of tax
$
2,423

 
$
(319
)
 
$
(693
)
 
 
 
 
 
 
Pension and Postretirement Benefit Plans (b)
 
 
 
 
 
Transition asset
$
7

 
$
8

 
$
8

Prior service costs
(173
)
 
(166
)
 
(164
)
Actuarial losses
(41,610
)
 
(40,606
)
 
(38,370
)
Settlement
(44,898
)
 
—

 
—

Total before tax
(86,674
)
 
(40,764
)
 
(38,526
)
Tax benefit
(21,675
)
 
(13,936
)
 
(14,430
)
Net of tax
$
(64,999
)
 
$
(26,828
)
 
$
(24,096
)
(a)     Amounts in parentheses indicate reductions to income and increases to other comprehensive income.
(b)
Reclassified from accumulated other comprehensive loss to other components of net pension and postretirement cost. These amounts are included in net periodic costs for defined benefit pension plans and nonpension postretirement benefit plans (see Note 14 for additional details).
Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2018, 2017 and 2016 were as follows:
 
Cash flow hedges
 
Available-for-sale securities
 
Pension and postretirement benefit plans
 
Foreign currency adjustments
 
Total
Balance January 1, 2016
$
(3,912
)
 
$
536

 
$
(738,768
)
 
$
(146,491
)
 
$
(888,635
)
Other comprehensive income (loss) before reclassifications (a)
1,095

 
(1,109
)
 
(73,141
)
 
(4,464
)
 
(77,619
)
Amounts reclassified from accumulated other comprehensive income (loss) (a), (b)
1,332

 
693

 
24,096

 
—

 
26,121

Net other comprehensive income (loss)
2,427

 
(416
)
 
(49,045
)
 
(4,464
)
 
(51,498
)
Balance at December 31, 2016
(1,485
)
 
120

 
(787,813
)
 
(150,955
)
 
(940,133
)
Other comprehensive income (loss) before reclassifications (a)
(288
)
 
1,158

 
12,185

 
106,391

 
119,446

Amounts reclassified from accumulated other comprehensive income (loss) (a), (b)
1,367

 
319

 
26,828

 
—

 
28,514

Net other comprehensive income (loss)
1,079

 
1,477

 
39,013

 
106,391

 
147,960

Balance at December 31, 2017
(406
)
 
1,597

 
(748,800
)
 
(44,564
)
 
(792,173
)
Cumulative effect of accounting change
(87
)
 
344

 
(116,490
)
 
—

 
(116,233
)
Restated balance at December 31, 2017
(493
)
 
1,941

 
(865,290
)
 
(44,564
)
 
(908,406
)
Other comprehensive income (loss) before reclassifications (a)
(763
)
 
(2,579
)
 
(46,170
)
 
(54,531
)
 
(104,043
)
Amounts reclassified from accumulated other comprehensive income (loss) (a), (b)
1,447

 
(2,423
)
 
64,999

 
—

 
64,023

Net other comprehensive income (loss)
684

 
(5,002
)
 
18,829

 
(54,531
)
 
(40,020
)
Balance at December 31, 2018
$
191

 
$
(3,061
)
 
$
(846,461
)
 
$
(99,095
)
 
$
(948,426
)
(a)     Amounts are net of tax. Amounts in parentheses indicate debits to AOCI.
(b)     See table above for additional details of these reclassifications.