Summary of Significant Accounting Policies (Details 5) - USD ($) $ in Millions	12 Months Ended
Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Intangible Assets, net
Impairment of intangible assets with indefinite lives	$ 0.0
Impairment of intangible assets with finite lives	0.0
Goodwill, net
Impairment of goodwill	0.0
Prepaid Expenses and Other Non-Current Assets, net
Officers' life insurance policies	5.1	$ 4.9
Amortization expense for deferred financing costs	0.7	0.4	$ 0.4
Unamortized deferred financing costs	1.8	1.1
Deferred Compensation
Deferred compensation investments included in other non-current assets	11.0	9.6
Liabilities associated with the non-qualified deferred compensation plan	$ 10.9	$ 10.6
Maximum
Intangible Assets, net
Finite lived intangible assets amortization period	20 years

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Amount of amortization expense attributable to debt issuance costs.

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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