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Discontinued Operations (Details 2) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 28, 2017 | Oct. 29, 2016 | Jul. 30, 2016 | Apr. 30, 2016 | Jan. 30, 2016 | Oct. 31, 2015 | Aug. 01, 2015 | May 02, 2015 | Jan. 28, 2017 | Jan. 30, 2016 | Jan. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | $ 16 |  |
Revenue |  |  |  |  |  |  |  |  |  | 0 | $ 217 | $ 1,564
Restructuring charges | [1] |  |  |  |  |  |  |  |  | 0 | 1 | 18
Gain (loss) from discontinued operations before income tax benefit |  |  |  |  |  |  |  |  |  | 28 | (8) | (12)
Income tax expense |  |  |  |  |  |  |  |  |  | (7) | (1) | 0
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  |  | 0 | 99 | 1
Net gain (loss) from discontinued operations including noncontrolling interests |  | $ 0 | $ 2 | $ 16 | $ 3 | $ 2 | $ (4) | $ 0 | $ 92 | 21 | 90 | (11)
Net (earnings) loss from discontinued operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  | 0 | 0 | (2)
Net gain (loss) from discontinued operations attributable to Best Buy Co., Inc. |  |  |  |  |  |  |  |  |  | 21 | 90 | $ (13)
Derivative, Notional Amount |  | $ 998 |  |  |  | $ 1,052 |  |  |  | $ 998 | $ 1,052 |
[1] | See Note 4, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

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