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Changes in Accumulated Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Dec. 31, 2017
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table presents the changes in accumulated other comprehensive loss by component for the years ended December 31, 2017 and 2016 (in thousands):

 
 
Changes related to cash flow derivative hedges
 
Changes in defined
benefit plans
 
Foreign currency translation adjustments
 
Accumulated other comprehensive income (loss)
 
 
 
 
 
 
 
 
 
Accumulated comprehensive loss at January 1, 2015
 
$
(826,026
)
 
$
(31,207
)
 
$
(39,761
)
 
$
(896,994
)
Other comprehensive (loss) income before reclassifications
 
(697,671
)
 
3,053

 
(25,952
)
 
(720,570
)
Amounts reclassified from accumulated other comprehensive loss
 
291,624

 
1,707

 
(4,200
)
 
289,131

Net current-period other comprehensive (loss) income
 
(406,047
)
 
4,760

 
(30,152
)
 
(431,439
)
 
 
 
 
 
 
 
 
 
Accumulated comprehensive loss at January 1, 2016
 
(1,232,073
)
 
(26,447
)
 
(69,913
)
 
(1,328,433
)
Other comprehensive income (loss) before reclassifications
 
73,973

 
(2,777
)
 
2,362

 
73,558

Amounts reclassified from accumulated other comprehensive loss
 
337,250

 
1,141

 
—

 
338,391

Net current-period other comprehensive income (loss)
 
411,223

 
(1,636
)
 
2,362

 
411,949

 
 
 
 
 
 
 
 
 
Accumulated comprehensive loss at January 1, 2017
 
(820,850
)
 
(28,083
)
 
(67,551
)
 
(916,484
)
Other comprehensive income (loss) before reclassifications
 
381,865

 
(6,755
)
 
17,307

 
392,417

Amounts reclassified from accumulated other comprehensive loss
 
188,630

 
1,172

 
—

 
189,802

Net current-period other comprehensive income (loss)
 
570,495

 
(5,583
)
 
17,307

 
582,219

 
 
 
 
 
 
 
 
 
Accumulated comprehensive loss at December 31, 2017
 
$
(250,355
)
 
$
(33,666
)
 
$
(50,244
)
 
$
(334,265
)
Reclassification out of Accumulated Other Comprehensive Income
The following table presents reclassifications out of accumulated other comprehensive loss for the years ended December 31, 2017 and 2016 (in thousands):

 
 
Amount of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income
Details about Accumulated Other Comprehensive Income (Loss) Components
 
Year Ended December 31, 2017
 
Year Ended December 31, 2016
 
Year Ended December 31, 2015
 
Affected Line Item in Statements of Comprehensive Income (Loss)
Loss on cash flow derivative hedges:
 
 
 
 
 
 
 
 
     Interest rate swaps
 
(31,603
)
 
(41,480
)
 
(36,401
)
 
Interest expense, net of interest capitalized
     Foreign currency forward contracts
 
(10,840
)
 
(8,114
)
 
(2,871
)
 
Depreciation and amortization expenses
     Foreign currency forward contracts
 
(9,472
)
 
(14,342
)
 
7,580

 
Other expense
     Foreign currency forward contracts
 
—

 
(207
)
 
—

 
Other indirect operating expenses
     Foreign currency collar options
 
(2,408
)
 
(2,408
)
 
(1,605
)
 
Depreciation and amortization expenses
     Fuel swaps
 
7,382

 
13,685

 
(9,583
)
 
Other expense
     Fuel swaps
 
(141,689
)
 
(284,384
)
 
(248,744
)
 
Fuel
 
 
(188,630
)
 
(337,250
)
 
(291,624
)
 
 
Amortization of defined benefit plans:
 
 
 
 
 
 
 
 
    Actuarial loss
 
(1,172
)
 
(1,141
)
 
(1,414
)
 
Payroll and related
          Prior service costs
 
—

 
—

 
(293
)
 


Payroll and related
 
 
(1,172
)
 
(1,141
)
 
(1,707
)
 
 
Release of foreign cumulative translation due to sale or liquidation of businesses:
 
 
 
 
 
 
 
 
Foreign cumulative translation
 
—

 
—

 
4,200

 
Other operating
Total reclassifications for the period
 
$
(189,802
)
 
$
(338,391
)
 
$
(289,131
)