Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
Oct. 28, 2017	Oct. 29, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferral percentage of base salary	50.00%
Percentage component of compensation allowed as deferral under deferred compensation plan	100.00%
Long-lived assets held and used	$ 115.8	$ 100.4
Performance share units
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Requisite service period	3 years
Minimum [Member] \| Performance share units
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pay out percentage	0.00%
Maximum [Member] \| Performance share units
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pay out percentage	200.00%

Deferred compensation plan maximum percentage of deferral of annual incentive compensation.

No definition available.

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- Definition

Deferred compensation plan maximum percentage of deferral of base salary.

+ References

No definition available.

+ Details

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- Definition

Long-lived assets held and used

+ References

No definition available.

+ 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

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

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