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Estimated Future Benefit Payments (Detail) $ in Thousands | Dec. 31, 2023 USD ($)
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Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
2024 | $ 8,006
2025 | 8,678
2026 | 9,162
2027 | 10,210
2028 | 10,309
2029-2033 | 57,049
Other Postretirement Benefit Plans, Defined Benefit |
Defined Benefit Plan Disclosure [Line Items] |
2024 | 3,197
2025 | 3,466
2026 | 3,698
2027 | 3,789
2028 | 3,803
2029-2033 | 20,913
Supplemental Employee Retirement Plans, Defined Benefit |
Defined Benefit Plan Disclosure [Line Items] |
2024 | 679
2025 | 1,173
2026 | 1,167
2027 | 1,160
2028 | 1,153
2029-2033 | $ 5,607

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