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Other Noncurrent Liabilities
 9 Months Ended
Sep. 30, 2018
Payables and Accruals [Abstract]  
Other Noncurrent Liabilities
Other Noncurrent Liabilities
Other noncurrent liabilities include the following:
 
September 30,
2018
 
September 30,
2017
 
December 31,
2017
 
(In thousands)
Benefit plan liabilities
$
177,289

 
$
196,967

 
$
168,539

Noncurrent tax liabilities
156,135

 
218,308

 
124,330

Other
138,086

 
161,052

 
191,257

 
$
471,510

 
$
576,327

 
$
484,126