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Stock-Based Compensation (Schedule of SARs Assumptions) (Details) - Stock Appreciation Rights (SARs) [Member] - $ / shares	3 Months Ended	6 Months Ended
	Apr. 28, 2015	Jul. 29, 2017	Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest rate yield curve, minimum		1.00%	0.19%
Risk free interest rate yield curve, maximum		1.83%	1.03%
Expected dividend yield		1.60%	1.10%
Expected volatility		35.68%	36.32%
Maximum life		2 years 7 months 6 days	3 years 7 months 6 days
Exercise multiple		1.34	1.34
Maximum payout	$ 10.00	$ 10.00	$ 10.00
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee exit rate		2.20%	2.20%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee exit rate		9.00%	9.00%

X

- Definition

The employee exit rate used in calculating fair value of award.

+ References

No definition available.

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- Definition

The exercise multiple used in calculating fair value of award.

+ References

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- Definition

The maximum payout used in calculating fair value of award.

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

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

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X

- Definition

The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

No definition available.

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- Definition

The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

No definition available.

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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.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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