Retirement Plans and Postretirement Medical Benefits (Nonpension Estimated Future Benefit Payments) (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2025	$ 124,481
2026	119,776
2027	118,061
2028	116,601
2029	114,773
Thereafter	538,158
Total	1,131,850
Postretirement Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
2025	9,525
2026	9,115
2027	8,648
2028	8,211
2029	7,751
Thereafter	32,039
Total	$ 75,289

Defined Benefit Plan, Expected Future Benefit Payments

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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

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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