Accounts Payable and Accrued Liabilities (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Accounts Payable and Accrued Liabilities, Current [Abstract]
Adjustments to reserve for sales returns	$ (16)	$ 19	$ 8
Workers compensation and general liability reserves covered by deposits and receivables	$ 112	$ 112