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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 26, 2020
Apr. 28, 2019
Apr. 26, 2020
Apr. 28, 2019
Income Tax Disclosure [Abstract]        
GILTI expense (benefit)   $ (50)   $ (96)
Effective income tax rate provision (as percent) 14.00% 12.30% 12.50% 12.80%
Increase in unrecognized tax benefits is reasonably possible $ 29   $ 29