Retirement Benefits (Estimated future benefit payments) (Details) $ in Thousands	Dec. 30, 2022 USD ($)
Pension Benefits
Estimated future benefit payments
2023	$ 15,583
2024	17,035
2025	16,406
2026	18,585
2027	20,116
Years 2028-2032	107,755
Postretirement Medical Benefits
Estimated future benefit payments
2023	1,763
2024	1,748
2025	1,735
2026	1,715
2027	1,699
Years 2028-2032	$ 8,136

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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 http://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 fifth fiscal year following current fiscal year.

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

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Amount of benefit for defined benefit plan expected to be paid in third 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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