Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements and Concentrations of Credit Risk (Financial Assets Measured At Fair Value On A Recurring Basis) (Details)

Fair Value Measurements and Concentrations of Credit Risk (Financial Assets Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Feb. 03, 2018	Jan. 28, 2017
Marketable equity and debt securities	$ 117	$ 112
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Marketable equity and debt securities	25	20
Significant Observable Inputs (Level 2) [Member]
Marketable equity and debt securities	92	92
Significant Unobservable Inputs (Level 3) [Member]
Marketable equity and debt securities	$ 0	$ 0

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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