Retirement Benefits (Details 13) - Pension Benefits [Member] - Forecast	12 Months Ended
	Dec. 29, 2024
Minimum | Equity Securities: Other U.S. equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	0
Minimum | Private equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	0
Minimum | Fixed income and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	50
Maximum | Equity Securities: Other U.S. equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	20
Maximum | Private equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	40
Maximum | Fixed income and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	100