Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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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.

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Derivative Instruments and Hedging Activities Foreign Currency Forward (Details) CAD in Millions, AUD in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 29, 2017 USD ($)	Apr. 29, 2017 USD ($)	Jul. 29, 2017 USD ($)	Jul. 29, 2017 CAD	Apr. 29, 2017 CAD	Apr. 29, 2017 AUD
Foreign Exchange Forward [Member] \| Intercompany Loans - CAD [Member]
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 6		$ 5
Foreign Exchange Forward [Member] \| AUD [Member]
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		$ 1
AUD [Member] \| Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative, Notional Amount \| AUD						AUD 70
Designated as Hedging Instrument [Member] \| Intercompany Loans - CAD [Member] \| Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative, Notional Amount \| CAD				CAD 100	CAD 170
Derivative Asset, Notional Amount \| CAD				CAD 70
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] \| Foreign Exchange Forward [Member] \| Intercompany Loans - CAD [Member]
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 1