Commitments and Contingencies (Details) $ in Millions	3 Months Ended					9 Months Ended	12 Months Ended	15 Months Ended
	Nov. 01, 2015 USD ($)	Aug. 02, 2015 USD ($)	May. 03, 2015 USD ($)	Feb. 01, 2015 USD ($)	Nov. 02, 2014 USD ($)	Nov. 01, 2015 USD ($)	Feb. 01, 2015 USD ($)	Nov. 01, 2015 USD ($)
Insurance [Abstract]
Network Security Insurance Coverage						$ 100.0	$ 100.0
Network Security Insurance Deductible						10.0	7.5
Data Breach [Member]
Loss Contingency Accrual [Roll Forward]
Data Breach, Accrued Liabilities, Beginning Balance	$ (152.0)	$ (19.0)	$ (12.0)	$ (8.0)	$ 0.0	(12.0)		$ 0.0
Data Breach, Accrued Liabilities, Expenses Incurred	(20.0)	(153.0)	(16.0)	(20.0)	(43.0)	(189.0)		(252.0)
Data Breach, Accrued Liabilities, Payments Made	7.0	20.0	9.0	16.0	35.0
Data Breach, Accrued Liabilities, Ending Balance	(165.0)	(152.0)	(19.0)	(12.0)	(8.0)	(165.0)	(12.0)	(165.0)
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]
Data Breach, Insurance Receivable, Beginning Balance	70.0	9.0	20.0	15.0		20.0
Data Breach, Insurance Receivable, Insurance Receivable Recorded		61.0	9.0	15.0	15.0	70.0		100.0
Data Breach, Insurance Receivable, Payments Received			20.0	10.0				30.0
Data Breach, Insurance Receivable, Ending Balance	$ 70.0	$ 70.0	9.0	20.0	$ 15.0	$ 70.0	$ 20.0	$ 70.0
Loss Contingency, Information about Litigation Matters [Abstract]
Data Breach, Number of Actions Filed	57					57		57
Number Of Purported Shareholder Derivative Actions Filed	2
Data Breach, Expenses Incurred Net of Insurance Receivable Recorded						$ 119.0		$ 152.0
Data Breach, Insurance Receivable, Payments Received			$ 20.0	$ 10.0				$ 30.0