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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 28, 2020 | Mar. 30, 2019 | Mar. 28, 2020 | Mar. 30, 2019 | Sep. 28, 2019
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective tax rate for continuing operations | 25.30% | 18.50% | 23.70% | 20.90% |
Unrecognized tax benefits | $ 174 |  | $ 174 |  | $ 169

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