Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt, Disclosure) (Detail) - USD ($) $ in Millions |
Oct. 29, 2016 |
Jan. 30, 2016 |
Oct. 31, 2015 |
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|---|---|---|---|---|---|
| Fair Value Measurements | |||||
| Principal Value | $ 5,750 | $ 5,750 | $ 5,750 | ||
| Fair Value (a) | [1] | $ 6,352 | $ 6,209 | $ 6,322 | |
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