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Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2017
May 01, 2016
Apr. 30, 2017
May 01, 2016
Income Tax Disclosure [Abstract]        
Effective income tax rate provision (as percent) 9.30% 19.00% 9.10% 14.50%
Decrease in unrecognized tax benefits is reasonably possible $ 27   $ 27