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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Apr. 03, 2021
Mar. 28, 2020
Oct. 03, 2020
Income Tax Disclosure [Abstract]          
Effective tax rate for continuing operations 23.50% 25.10% 23.50% 23.60%  
Unrecognized tax benefits $ 168   $ 168   $ 165