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Changes in Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of Changes In Accumulated Other Comprehensive Income (Loss) by Component | The following table presents the changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 2019 and 2018 (in thousands):
| Accumulated Other Comprehensive Income (Loss) for the Six Months Ended June 30, 2019 |  | Accumulated Other Comprehensive Income (Loss) for the Six Months Ended June 30, 2018
| Changes related to cash flow derivative hedges |  | Changes in defined benefit plans |  | Foreign currency translation adjustments |  | Accumulated other comprehensive loss |  | Changes related to cash flow derivative hedges |  | Changes in defined benefit plans |  | Foreign currency translation adjustments |  | Accumulated other comprehensive loss
Accumulated comprehensive loss at beginning of the year | $ | (537,216 | ) |  | $ | (26,023 | ) |  | $ | (64,495 | ) |  | $ | (627,734 | ) |  | $ | (250,355 | ) |  | $ | (33,666 | ) |  | $ | (50,244 | ) |  | $ | (334,265 | )
Other comprehensive income (loss) before reclassifications | (3,249 | ) |  | (10,758 | ) |  | 7,827 |  |  | (6,180 | ) |  | 69,932 |  |  | 5,082 |  |  | (10,361 | ) |  | 64,653 |
Amounts reclassified from accumulated other comprehensive loss | (19,642 | ) |  | 383 |  |  | — |  |  | (19,259 | ) |  | 3,698 |  |  | 714 |  |  | — |  |  | 4,412 |
Net current-period other comprehensive income (loss) | (22,891 | ) |  | (10,375 | ) |  | 7,827 |  |  | (25,439 | ) |  | 73,630 |  |  | 5,796 |  |  | (10,361 | ) |  | 69,065 |
Ending balance | $ | (560,107 | ) |  | $ | (36,398 | ) |  | $ | (56,668 | ) |  | $ | (653,173 | ) |  | $ | (176,725 | ) |  | $ | (27,870 | ) |  | $ | (60,605 | ) |  | $ | (265,200 | )
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) | The following table presents reclassifications out of accumulated other comprehensive income (loss) for the quarters and six months ended June 30, 2019 and 2018 (in thousands):
|  | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income |  |
Details About Accumulated Other Comprehensive Income (Loss) Components |  | Quarter Ended June 30, 2019 |  | Quarter Ended June 30, 2018 |  | Six Months Ended June 30, 2019 |  | Six Months Ended June 30, 2018 |  | Affected Line Item in Statements of Comprehensive Income (Loss)
Gain (loss) on cash flow derivative hedges: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | (409 | ) |  | $ | (2,138 | ) |  | $ | (800 | ) |  | $ | (8,976 | ) |  | Interest expense, net of interest capitalized
Foreign currency forward contracts |  | (3,545 | ) |  | (3,156 | ) |  | (6,879 | ) |  | (6,468 | ) |  | Depreciation and amortization expenses
Foreign currency forward contracts |  | (1,300 | ) |  | 14,601 |  |  | (2,615 | ) |  | 14,643 |  |  | Other income (expense)
Fuel swaps |  | (1,188 | ) |  | (133 | ) |  | (1,444 | ) |  | 192 |  |  | Other income (expense)
Fuel swaps |  | 13,362 |  |  | 2,043 |  |  | 31,380 |  |  | (3,089 | ) |  | Fuel
|  | 6,920 |  |  | 11,217 |  |  | 19,642 |  |  | (3,698 | ) |  |
Amortization of defined benefit plans: |  |  |  |  |  |  |  |  |  |  |
Actuarial loss |  | (195 | ) |  | (372 | ) |  | (383 | ) |  | (714 | ) |  | Payroll and related
|  | (195 | ) |  | (372 | ) |  | (383 | ) |  | (714 | ) |  |
Foreign cumulative translation |  | — |  |  | — |  |  | — |  |  | — |  |  | Other operating
Total reclassifications for the period |  | $ | 6,725 |  |  | $ | 10,845 |  |  | $ | 19,259 |  |  | $ | (4,412 | ) |  |

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