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Other Noncurrent Liabilities (Tables)
 9 Months Ended
Sep. 30, 2020
Payables and Accruals [Abstract]  
Schedule of Other Noncurrent Liabilities
Other noncurrent liabilities include the following:
September 30,
2020		September 30,
2019		December 31,
2019
 (In thousands)
Benefit plan liabilities$203,295 $183,214 $212,280 
Noncurrent income tax liabilities129,773 146,297 125,515