Fair Value Measurements (Carrying Value and Fair Value of Long Term Debt) (Detail) (USD $) In Millions, unless otherwise specified	Jan. 28, 2012		Jan. 29, 2011
Fair Value Measurements [Abstract]
Carrying Value	$ 3,538		$ 2,507
Fair Value	$ 3,849	[1]	$ 2,638	[1]

[1] The estimated fair value of the Company’s publicly traded debt is based on quoted market prices. The estimates presented are not necessarily indicative of the amounts that the Company could realize in a current market exchange.