Fair Value Measurements (Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Ending Balance	$ 1	$ 1
Fair Value, Inputs, Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1	2
Change in Estimated Fair Value Reported in Earnings	0	(1)
Ending Balance	$ 1	$ 1