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Employee Stock Plans (Employee Stock Purchase Plan) (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 28, 2018 USD ($) $ / shares shares	Jan. 29, 2017 USD ($)	Jan. 31, 2016 USD ($)
ESPP Disclosures [Line Items]
Number of employee stock purchase plans	2
Purchase Price of Shares under ESPP in relation to FMV of Stock	85.00%
Purchase Period	6 months
Shares Purchased	1
Weighted Average Purchase Price of Shares Purchased | $ / shares	$ 143.71
Employee Cash Contributions | $	$ 17
Share-based compensation expense | $	$ 273	$ 267	$ 244
U.S. ESPP Plan [Member]
ESPP Disclosures [Line Items]
Shares available for future grants	20
Non U.S. ESPP Plan [Member]
ESPP Disclosures [Line Items]
Shares available for future grants	19

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- Definition

Number of Employee Stock Purchase Plans ("ESPPs").

+ References

No definition available.

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- Definition

Percentage the purchase price of shares under the ESPPs is equal to the stock's fair market value.

+ References

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- Definition

Purchase period of Employee Stock Purchase Plans.

+ References

No definition available.

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- Definition

This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929

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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

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- Definition

Weighted average purchase price of capital shares purchased through an employee stock ownership plan.

+ References

No definition available.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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-Name Accounting Standards Codification
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