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Stockholders' Equity (Details) - USD ($) shares in Millions, $ in Millions |  | 3 Months Ended | 4 Months Ended |
--- | --- | --- | --- | ---
May 17, 2018 | Apr. 29, 2018 | Apr. 30, 2017 | May 17, 2018 | Jan. 28, 2018
Accelerated Share Repurchases [Line Items] |  |  |  |  |
Repurchases of common stock through accelerated share repurchase agreements |  | $ 1,121 | $ 1,289 |  |
Treasury stock value |  | 49,044 |  |  | $ 48,196
Paid-in capital |  | 10,017 |  |  | $ 10,192
Q1 Accelerated Share Repurchase Agreement [Member] |  |  |  |  |
Accelerated Share Repurchases [Line Items] |  |  |  |  |
Repurchases of common stock through accelerated share repurchase agreements |  | $ 750 |  |  |
Treasury stock shares acquired |  | 3.4 |  |  |
Treasury stock value |  | $ 598 |  |  |
Paid-in capital |  | $ 152 |  |  |
Q1 Accelerated Share Repurchase Agreement [Member] | Subsequent Event [Member] |  |  |  |  |
Accelerated Share Repurchases [Line Items] |  |  |  |  |
Treasury stock shares acquired | 0.8 |  |  | 4.2 |

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