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Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 29, 2016 | Apr. 30, 2016 | Oct. 31, 2015 | Oct. 29, 2016 | Oct. 31, 2015
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  | $ 40 |  | $ 40 | $ 35
Other Comprehensive Income (Loss), before Reclassifications, before Tax |  |  |  | (32) | 14
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  |  |  | 1 | (7)
Other Comprehensive Income (Loss), Tax |  |  |  | 3 | (1)
Current-period Other Comprehensive Income (Loss) | $ (10) |  | $ 0 | (28) | 6
Accumulated Other Comprehensive Income (Loss), Ending Balance | 12 |  | 41 | 12 | 41
Other Income | 3 |  | 0 | 83 | 75
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | 0 | (3) | 0 | (3) | 0
Available-for-sale Securities, Gross Realized Gains |  |  |  | (4) | 0
Provision for Income Taxes | 68 |  | 96 | 277 | 335
Net Income | 122 |  | 164 | 526 | 617
Accumulated Translation Adjustment [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  | 28 |  | 28 | 51
Other Comprehensive Income (Loss), before Reclassifications, before Tax |  |  |  | (25) | 5
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  |  |  | 0 | 0
Other Comprehensive Income (Loss), Tax |  |  |  | 0 | 0
Current-period Other Comprehensive Income (Loss) |  |  |  | (25) | 5
Accumulated Other Comprehensive Income (Loss), Ending Balance | 3 |  | 56 | 3 | 56
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  | 4 |  | 4 | (16)
Other Comprehensive Income (Loss), before Reclassifications, before Tax |  |  |  | (1) | 6
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  |  |  | 5 | (7)
Other Comprehensive Income (Loss), Tax |  |  |  | (1) | 0
Current-period Other Comprehensive Income (Loss) |  |  |  | 3 | (1)
Accumulated Other Comprehensive Income (Loss), Ending Balance | 7 |  | (17) | 7 | (17)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  | 8 |  | 8 | 0
Other Comprehensive Income (Loss), before Reclassifications, before Tax |  |  |  | (6) | 3
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  |  |  | (4) | 0
Other Comprehensive Income (Loss), Tax |  |  |  | 4 | (1)
Current-period Other Comprehensive Income (Loss) |  |  |  | (6) | 2
Accumulated Other Comprehensive Income (Loss), Ending Balance | 2 |  | 2 | 2 | 2
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |  |  |  |  |
Other Income | (4) |  | 3 | 5 | (7)
Provision for Income Taxes | 0 |  | 0 | 0 | 0
Net Income | (4) |  | 3 | 5 | (7)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |  |
Other Income |  |  | $ 0 |  | $ 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | 0 |  |  | 1 |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | 0 |  |  | (3) |
Available-for-sale Securities, Gross Realized Gains | $ 0 | $ (4) |  | $ (4) |

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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