Investment in HD Supply Holdings, Inc. (Narrative) (Details) (HD Supply Inc [Member], USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	May 04, 2014	Feb. 02, 2014	Jan. 31, 2010
HD Supply Inc [Member]
Schedule of Cost Method Investments [Line Items]
Cost Method Investments, Common Stock Shares Owned	12.4	16.3
Cost Method Investment, Ownership Percentage	6.00%	8.00%
Cost Method Investments, Cost Basis			$ 0
Cost Method Investments, Realized Gains	$ 97,000,000
Cost Method Investments, Common Stock Shares Sold	3.9