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Changes in Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2017
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Changes in Accumulated Other Comprehensive Income (Loss) | Changes in 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 | )
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 | ) |  |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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