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Other Noncurrent Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Other Noncurrent Liabilities [Line Items]    
Deferred compensation trusts $ 330,110 $ 350,427
Noncurrent liabilities    
Other Noncurrent Liabilities [Line Items]    
Deferred compensation and retirement obligations 324,000 329,000
Insurance liabilities $ 58,000 $ 70,000