Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 30, 2016	Oct. 29, 2016	Oct. 31, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent		(7.30%)	28.80%
Goodwill, Impairment Loss	$ 630	$ 630