Foreign Exchange Forward Contracts Outstanding to Sell Various Currencies (Detail) In Millions, unless otherwise specified	Jul. 28, 2012 USD ($)		Jul. 28, 2012 GBP (£)	Jan. 28, 2012 USD ($)		Jan. 28, 2012 GBP (£)	Jul. 30, 2011 USD ($)		Jul. 30, 2011 GBP (£)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amounts of cash flow hedges	$ 1,112	[1]	£ 19	$ 796	[1]	£ 30	$ 1,081	[1]	£ 43

[1] The principal currencies hedged against changes in the U.S. dollar were the Euro, British pound, Japanese yen, and Canadian dollar.