Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt, Disclosure) (Detail) - USD ($) $ in Millions		Jul. 30, 2016	Jan. 30, 2016	Aug. 01, 2015
Fair Value Measurements
Principal Value		$ 5,750	$ 5,750	$ 4,750
Fair Value (a)	[1]	$ 6,349	$ 6,209	$ 5,233

[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 Measurement. The estimates presented are not necessarily indicative of the amounts that the Company could realize in a current market exchange.