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Accrued Liabilities (Tables) | 3 Months Ended
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Mar. 31, 2018
Accrued Liabilities, Current [Abstract] |
Schedule of Accrued Liabilities | Accrued liabilities consist of the following:
(In thousands) | March 31, 2018 |  | December 31, 2017
Interest | $ | 40,093 |  |  | $ | 30,262 |
Employee related costs | 55,181 |  |  | 117,850 |
Income taxes payable | 35,025 |  |  | 19,558 |
Other accrued expenses | 105,002 |  |  | 95,406 |
Total accrued liabilities | $ | 235,301 |  |  | $ | 263,076 |

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