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Other Noncurrent Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2018
Payables and Accruals [Abstract] |
Schedule of Other Noncurrent Liabilities | Other noncurrent liabilities include the following:
| June 30, 2018 |  | June 30, 2017 |  | December 31, 2017
| (In thousands)
Benefit plan liabilities | $ | 179,473 |  |  | $ | 206,200 |  |  | $ | 168,539 |
Noncurrent tax liabilities | 122,425 |  |  | 96,083 |  |  | 124,330 |
Other | 141,951 |  |  | 150,001 |  |  | 191,257 |
| $ | 443,849 |  |  | $ | 452,284 |  |  | $ | 484,126 |

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