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Employee Benefit Plans - Benefit Payments and Contributions (Details) | Dec. 31, 2020 USD ($)
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Estimated Future Employer Contributions [Abstract] |
Estimated future employer contributions in next fiscal year | $ 5,200,000
Nonqualified Plan [Member] | Supplemental Employee Retirement Plans, Defined Benefit [Member] |
Expected Future Benefit Payments by Fiscal Year [Abstract] |
Next 12 Months | 4,958,000
+2 Years | 5,021,000
+3 Years | 5,406,000
+4 Years | 7,090,000
+5 Years | 1,758,000
Thereafter | 22,248,000
United States | Qualified Plan [Member] | Pension Plan [Member] |
Expected Future Benefit Payments by Fiscal Year [Abstract] |
Next 12 Months | 36,044,000
+2 Years | 37,184,000
+3 Years | 34,679,000
+4 Years | 35,863,000
+5 Years | 33,816,000
Thereafter | 146,262,000
Foreign Plan [Member] | Qualified Plan [Member] | Pension Plan [Member] |
Expected Future Benefit Payments by Fiscal Year [Abstract] |
Next 12 Months | 9,999,000
+2 Years | 9,944,000
+3 Years | 11,333,000
+4 Years | 13,170,000
+5 Years | 11,375,000
Thereafter | $ 69,768,000

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