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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
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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%

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