Fair Value Measurements (Carrying Value and Fair Value of Long Term Debt) (Detail) - USD ($) $ in Millions		Jan. 30, 2016	Jan. 31, 2015
Fair Value Measurements [Abstract]
Long-term Debt Principal Value		$ 5,750	$ 4,750
Fair Value	[1]	$ 6,209	$ 5,305

[1] The estimated fair value of the Company’s publicly traded debt is based on reported transaction prices which are considered Level 2 inputs in accordance with ASC Topic 820, Fair Value Measurements and Disclosure. The estimates presented are not necessarily indicative of the amounts that the Company could realize in a current market exchange.