Amount of non-cash loss of goodwill impairment after preliminary analysis during the period.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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Percentage of fair value of reporting unit in excess of carrying amount.

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Basis of Presentation and Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets (Details)	3 Months Ended			6 Months Ended
	Jan. 27, 2017 USD ($) item	Jan. 29, 2016 USD ($)	Oct. 30, 2015 USD ($)	Jul. 28, 2017 USD ($) item
Goodwill and Other Intangible assets
Number of reporting units \| item	2			2
Goodwill impairment	$ 0			$ 0
Goodwill	$ 380,643,000			$ 380,643,000
Retail
Goodwill and Other Intangible assets
Goodwill impairment			$ 120,000,000
Goodwill impairment adjustment		$ 20,900,000
Goodwill impairment loss after preliminary analysis			$ 99,100,000
Goodwill		368,100,000
Wholesale
Goodwill and Other Intangible assets
Goodwill		$ 12,500,000
Fair value in excess of carrying value (as a percent)	18.00%
Trade name
Goodwill and Other Intangible assets
Indefinite-lived intangible asset impairment loss	$ 0
Fair value in excess of carrying value (as a percent)	18.00%