Retirement Plans (Health Care Cost Trend Rates for Postretirement Health Plans) (Details)	Oct. 02, 2022	Oct. 03, 2021	Sep. 27, 2020
Participants under age 65
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate for next year	6.25%	6.50%	6.75%
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	5.75%	6.00%	6.25%
Rate to which the cost trend rate is assumed to decline	4.50%	4.50%	4.50%