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Other Noncurrent Liabilities
3 Months Ended
Mar. 31, 2021
Payables and Accruals [Abstract]  
Other Noncurrent Liabilities Other Noncurrent Liabilities
Other noncurrent liabilities include the following:
March 31,
2021
March 31,
2020
December 31,
2020
 (In thousands)
Benefit plan liabilities$221,345 $205,694 $225,957 
Noncurrent income tax payable72,252 70,902 71,342 
Deferred income tax liability 60,929 54,896 60,892