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Details of Certain Consolidated Balance Sheet Captions (Retirement Obligations and Other Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Details of Certain Consolidated Balance Sheet Captions [Abstract] |  |
Pension and postretirement benefits | $ 202,583 | $ 142,204
Deferred taxes | 1,335 | 7,901
Operating lease liabilities | 138,665 | 155,196
Legal and environmental | 93,989 | 90,207
Uncertain tax positions and other tax liabilities | 51,584 | 37,604
Other | 39,629 | 31,613
Retirement obligations and other liabilities | $ 389,120 | $ 309,529

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- Definition For a classified balance sheet, the carrying amount as of the balance sheet date of the portion of the obligations recognized for the various post employment and postretirement benefits provided to former or inactive employees, their beneficiaries, and covered dependents that is payable after one year (or beyond the operating cycle if longer. Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet due to materiality considerations. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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