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Debt (Short-term Commercial Paper Programs and Line of Credit Facility) (Details) - USD ($) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 08, 2017 | Dec. 07, 2017 | Jan. 28, 2018 | Jan. 29, 2017
Commercial Paper [Member] |  |  |  |
Short-term Line of Credit and Commercial Paper Programs [Abstract] |  |  |  |
Maximum borrowing capacity of credit facility |  |  | $ 3,000 | $ 2,000
Weighted average interest rate |  |  | 1.45% | 0.63%
Balance outstanding at fiscal year-end |  |  | $ 1,559 | $ 710
Maximum amount outstanding at any month-end |  |  | 1,559 | 710
Average daily short-term borrowings |  |  | $ 173 | $ 51
Revolving Credit Facility [Member] |  |  |  |
Short-term Line of Credit and Commercial Paper Programs [Abstract] |  |  |  |
Maximum borrowing capacity of credit facility | $ 3,000 |  |  |
Revolving Credit Facility [Member] | 5-year Back-up Credit Facility [Member] |  |  |  |
Short-term Line of Credit and Commercial Paper Programs [Abstract] |  |  |  |
Maximum borrowing capacity of credit facility | $ 2,000 | $ 2,000 |  |
Expiration date of credit facility | Dec. 08, 2022 | Dec. 31, 2019 |  |
Revolving Credit Facility [Member] | 364-day Back-up Credit Facility [Member] |  |  |  |
Short-term Line of Credit and Commercial Paper Programs [Abstract] |  |  |  |
Maximum borrowing capacity of credit facility | $ 1,000 |  |  |
Expiration date of credit facility | Dec. 07, 2018 |  |  |

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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted average interest rate of short-term debt outstanding calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period. + References No definition available. + Details
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- Definition For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, maximum month-end borrowings during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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