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Fair Value Measurements (Fair Value, Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Apr. 29, 2017 | Apr. 30, 2016 | Jan. 28, 2017
Available-for-sale Securities, Gross Realized Gains | $ 0 | $ 4 |
Assets: |  |  |
Cash and Cash Equivalents | 1,555 | 1,267 | $ 1,934
Available-for-sale Securities | 5 | 11 | 5
Foreign Currency Cash Flow Hedge Asset at Fair Value | 27 | 11 | 18
Interest Rate Fair Value Hedges | 2 | 10 | 2
Proceeds from Sale of Available-for-sale Securities, Equity |  | 10 |
Liabilities: |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | 1 | 0 | 1
Marketable Securities, Realized Gain (Loss) | 0 | (3) |
Fair Value, Inputs, Level 1 [Member] |  |  |
Assets: |  |  |
Cash and Cash Equivalents | 1,555 | 1,267 | 1,934
Available-for-sale Securities | 5 | 11 | 5
Foreign Currency Cash Flow Hedge Asset at Fair Value | 0 | 0 | 0
Interest Rate Fair Value Hedges | 0 | 0 | 0
Liabilities: |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | 0 |  | 0
Fair Value, Inputs, Level 2 [Member] |  |  |
Assets: |  |  |
Cash and Cash Equivalents | 0 | 0 | 0
Available-for-sale Securities | 0 | 0 | 0
Foreign Currency Cash Flow Hedge Asset at Fair Value | 27 | 11 | 18
Interest Rate Fair Value Hedges | 2 | 10 | 2
Liabilities: |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | 1 |  | 1
Fair Value, Inputs, Level 3 [Member] |  |  |
Assets: |  |  |
Cash and Cash Equivalents | 0 | 0 | 0
Available-for-sale Securities | 0 | 0 | 0
Foreign Currency Cash Flow Hedge Asset at Fair Value | 0 | 0 | 0
Interest Rate Fair Value Hedges | 0 | $ 0 | 0
Liabilities: |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | $ 0 |  | $ 0

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- Definition Fair Value, Assets Measured on Recurring Basis [Abstract] + References No definition available. + Details
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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Fair value as of the balance sheet date of all foreign currency derivative assets designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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- Definition Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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- Definition Fair value as of the balance sheet date of all derivative assets designated as interest rate fair value hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 + Details
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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 + Details
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