Accounts Payable and Accrued Liabilities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Accounts Payable and Accrued Liabilities, Current [Abstract]
Adjustments to reserve for sales returns	$ 9	$ 2	$ 6
Workers compensation and general liability reserves covered by deposits and receivables	$ 98	$ 93