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Changes in Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2021
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 loss by component for the quarters ended March 31, 2021 and 2020 (in thousands):
| Accumulated Other Comprehensive Loss for the Quarter Ended March 31, 2021 |  | Accumulated Other Comprehensive Loss for the Quarter Ended March 31, 2020
| 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 | $ | (650,519) |  |  | $ | (65,542) |  |  | $ | (23,280) |  |  | $ | (739,341) |  |  | $ | (688,529) |  |  | $ | (45,558) |  |  | $ | (63,626) |  |  | $ | (797,713) |
Other comprehensive income (loss) before reclassifications | (927) |  |  | 9,720 |  |  | 9,722 |  |  | 18,515 |  |  | (322,985) |  |  | (8,094) |  |  | 10,290 |  |  | (320,789) |
Amounts reclassified from accumulated other comprehensive loss | 11,229 |  |  | 743 |  |  | — |  |  | 11,972 |  |  | 22,380 |  |  | 505 |  |  | — |  |  | 22,885 |
Net current-period other comprehensive income (loss) | 10,302 |  |  | 10,463 |  |  | 9,722 |  |  | 30,487 |  |  | (300,605) |  |  | (7,589) |  |  | 10,290 |  |  | (297,904) |
Ending balance | $ | (640,217) |  |  | $ | (55,079) |  |  | $ | (13,558) |  |  | $ | (708,854) |  |  | $ | (989,134) |  |  | $ | (53,147) |  |  | $ | (53,336) |  |  | $ | (1,095,617) |
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) | The following table presents reclassifications out of accumulated other comprehensive loss for the quarters ended March 31, 2021 and 2020 (in thousands):
|  | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income |  |
Details About Accumulated Other Comprehensive Loss Components |  | Quarter Ended March 31, 2021 |  | Quarter Ended March 31, 2020 |  |  |  |  |  | Affected Line Item in Statements of Comprehensive Loss
Gain (loss) on cash flow derivative hedges: |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | (9,509) |  |  | $ | (3,391) |  |  |  |  |  |  | Interest expense, net of interest capitalized
Foreign currency forward contracts |  | (3,781) |  |  | (3,337) |  |  |  |  |  |  | Depreciation and amortization expenses
Foreign currency forward contracts |  | (1,291) |  |  | (1,763) |  |  |  |  |  |  | Other income (expense)
Fuel swaps |  | (407) |  |  | 344 |  |  |  |  |  |  | Other income (expense)
Fuel swaps |  | 3,759 |  |  | (14,233) |  |  |  |  |  |  | Fuel
|  | (11,229) |  |  | (22,380) |  |  |  |  |  |  |
Amortization of defined benefit plans: |  |  |  |  |  |  |  |  |  |
Actuarial loss |  | (743) |  |  | (505) |  |  |  |  |  |  | Payroll and related
|  | (743) |  |  | (505) |  |  |  |  |  |  |
Total reclassifications for the period |  | $ | (11,972) |  |  | $ | (22,885) |  |  |  |  |  |  |

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