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Retirement Plans (Health Care Cost Trend Rates for Postretirement Health Plans) (Details)
Sep. 28, 2025
Sep. 29, 2024
Oct. 01, 2023
Participants under age 65      
Defined Benefit Plan Disclosure [Line Items]      
Health care cost trend rate for next year 6.50% 6.25% 6.25%
Rate to which the cost trend rate is assumed to decline 4.50% 4.50% 4.50%
Participants age 65 or older      
Defined Benefit Plan Disclosure [Line Items]      
Health care cost trend rate for next year 6.50% 6.25% 6.25%
Rate to which the cost trend rate is assumed to decline 4.50% 4.50% 4.50%