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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 27, 2024	Dec. 29, 2023	Dec. 30, 2022
Other Details
Write-downs of long-lived assets	$ 0
Amortization of intangible assets	19,000,000	$ 18,000,000	$ 19,000,000
Cash surrender value of life insurance change	2,000,000	3,000,000	$ (4,000,000)
Self insured reserves	$ 8,000,000	9,000,000
Sales Returns Percentage Of Sales	2.00%
Contract with Customer, Liability	$ 53,000,000	52,000,000
Contract with Customer, Liability, Revenue Recognized	50,000,000	50,000,000
Derivative, Notional Amount	$ 51,000,000
Minimum
Other Details
Capitalized software estimated useful life	2 years
Maximum
Other Details
Capitalized software estimated useful life	5 years
Trade Accounts Receivable
Other Details
Accounts receivable	$ 348,000,000	343,000,000
Other Receivables
Other Details
Accounts receivable	$ 15,000,000	$ 11,000,000

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