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Pensions And Other Postretirement Benefits Pensions and Other Postretirement Benefits (Amounts Recognized in Other Comprehensive Income) (Details) - USD ($) $ in Millions | Oct. 02, 2021 | Oct. 03, 2020
--- | --- | ---
Other Postretirement Benefits Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actuarial (gain) loss | $ 18 | $ 24
Prior service (credit) cost | (5) | (37)
Total accumulated other comprehensive (income)/loss | 13 | (13)
Assets for Plan Benefits, Defined Benefit Plan | 0 | 0
Qualified Plan [Member] | Defined Benefit Plan, Funded Plan [Member] | Pension Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actuarial (gain) loss | 4 | 4
Prior service (credit) cost | 0 | 0
Total accumulated other comprehensive (income)/loss | 4 | 4
Assets for Plan Benefits, Defined Benefit Plan | 5 | 4
Nonqualified Plan [Member] | Defined Benefit Plan, Unfunded Plan [Member] | Pension Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actuarial (gain) loss | 36 | 45
Prior service (credit) cost | 2 | 3
Total accumulated other comprehensive (income)/loss | 38 | 48
Assets for Plan Benefits, Defined Benefit Plan | $ 0 | $ 0

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