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Pensions and other postretirement benefit plans - Schedule of Estimated Benefit Payments (Details) $ in Thousands | Dec. 31, 2025 USD ($)
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Pension benefits |
Defined Benefit Plans and Other Postretirement Benefit Plans |
2026 | $ 112,980
2027 | 113,107
2028 | 111,222
2029 | 112,295
2030 | 108,085
Thereafter | 488,002
Postretirement benefits |
Defined Benefit Plans and Other Postretirement Benefit Plans |
2026 | 4,477
2027 | 4,200
2028 | 3,943
2029 | 3,695
2030 | 3,469
Thereafter | $ 14,275

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