Share-Based Compensation (Restricted Stock Units Assumptions) (Details) - Market-based restricted stock units [Member]	6 Months Ended
Jul. 29, 2017 $ / shares	Jul. 30, 2016 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date market price (in dollars per share)	$ 11.43	$ 29.56
Fair value (in dollars per share)	$ 11.79	$ 34.12
Price volatility	47.00%	44.00%
Expected term (years)	2 years 10 months 24 days	2 years 9 months 18 days
Risk-free interest rate	1.50%	1.10%
Dividend yield	7.00%	2.80%
Average volatility of peer companies	35.20%	34.50%
Average correlation coefficient of peer companies	0.2664	0.3389

Share-based Compensation Assumption, Average Correlation Coefficient of Peer Companies

No definition available.

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- Definition

The assumption of average volatility of peer companies that is used in valuing an option or stock unit on its own shares.

+ References

No definition available.

+ Details

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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+ Details

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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.

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- Definition

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

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- Definition

Weighted average expected volatility rate of share-based compensation awards.

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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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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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=6415400&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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