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Changes in Accumulated Other Comprehensive (Loss) Income (Tables) | 3 Months Ended
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Mar. 31, 2018
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 quarters ended March 31, 2018 and 2017 (in thousands):
| Accumulated Other Comprehensive Income (Loss) for the Quarter Ended March 31, 2018 |  | Accumulated Other Comprehensive Income (Loss) for the Quarter Ended March 31, 2017
| 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 | $ | (250,355 | ) |  | $ | (33,666 | ) |  | $ | (50,244 | ) |  | $ | (334,265 | ) |  | $ | (820,850 | ) |  | $ | (28,083 | ) |  | $ | (67,551 | ) |  | $ | (916,484 | )
Other comprehensive income (loss) before reclassifications | 127,616 |  |  | 7,417 |  |  | 1,160 |  |  | 136,193 |  |  | (30,929 | ) |  | (904 | ) |  | 2,342 |  |  | (29,491 | )
Amounts reclassified from accumulated other comprehensive loss | 14,914 |  |  | 343 |  |  | — |  |  | 15,257 |  |  | 53,390 |  |  | 263 |  |  | — |  |  | 53,653 |
Net current-period other comprehensive income (loss) | 142,530 |  |  | 7,760 |  |  | 1,160 |  |  | 151,450 |  |  | 22,461 |  |  | (641 | ) |  | 2,342 |  |  | 24,162 |
Ending balance | $ | (107,825 | ) |  | $ | (25,906 | ) |  | $ | (49,084 | ) |  | $ | (182,815 | ) |  | $ | (798,389 | ) |  | $ | (28,724 | ) |  | $ | (65,209 | ) |  | $ | (892,322 | )
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 ended March 31, 2018 and 2017 (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 March 31, 2018 |  | Quarter Ended March 31, 2017 |  | Affected Line Item in Statements of Comprehensive Income (Loss)
Loss on cash flow derivative hedges: |  |  |  |  |  |  |
Interest rate swaps |  | $ | (6,838 | ) |  | $ | (8,857 | ) |  | Interest expense, net of interest capitalized
Foreign currency forward contracts |  | (3,312 | ) |  | (2,710 | ) |  | Depreciation and amortization expenses
Foreign currency forward contracts |  | 42 |  |  | (3,570 | ) |  | Other expense
Foreign currency collar options |  | — |  |  | (602 | ) |  | Depreciation and amortization expenses
Fuel swaps |  | 325 |  |  | 2,277 |  |  | Other expense
Fuel swaps |  | (5,131 | ) |  | (39,928 | ) |  | Fuel
|  | (14,914 | ) |  | (53,390 | ) |  |
Amortization of defined benefit plans: |  |  |  |  |  |  |
Actuarial loss |  | (343 | ) |  | (263 | ) |  | Payroll and related
|  | (343 | ) |  | (263 | ) |  |
Total reclassifications for the period |  | $ | (15,257 | ) |  | $ | (53,653 | ) |  |

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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