Retirement Plans and Postretirement Medical Benefits (Nonpension Estimated Future Benefit Payments) (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2023	$ 128,361
2024	121,948
2025	122,072
2026	120,822
2027	119,912
Thereafter	582,503
Total	1,195,618
Postretirement Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
2023	11,561
2024	11,076
2025	10,568
2026	10,072
2027	9,523
Thereafter	39,736
Total	$ 92,536

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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

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