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Pension and other post-retirement benefits - Expected Benefit Payments (Detail) $ in Thousands | Dec. 31, 2023 USD ($)
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Pension plan |
Defined Benefit Plan Disclosure [Line Items] |
2024 | $ 48,271
2025 | 49,652
2026 | 49,389
2027 | 50,443
2028 | 50,751
2029-2033 | 255,465
OPEB |
Defined Benefit Plan Disclosure [Line Items] |
2024 | 11,718
2025 | 12,303
2026 | 12,623
2027 | 13,105
2028 | 13,487
2029-2033 | $ 71,230

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- Definition Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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