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Intangible Assets and Goodwill - Narrative - Indefinite-lived Intangibles Excluding Goodwill, Impairment Test (Details) - Trademarks - Interface | 12 Months Ended
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May. 02, 2015 USD ($) reporting_unit | May. 03, 2014 USD ($) reporting_unit
Indefinite-lived Intangible Assets [Line Items] |  |
Number of reporting units with indefinite-lived intangible assets (excluding goodwill) where impairment test was performed | reporting_unit | 1 | 1
Impairment of indefinite-lived intangible assets (excluding goodwill) | $ 0 | $ 0
Percentage by which fair value exceeded carrying value | 64.00% | 117.00%

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- Definition Intangible Assets, Indefinite-lived (Excluding Goodwill), Impairment Test, Excess of Fair Value over Carrying Value, Percentage + References No definition available. + Details
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- Definition Number of Reporting Units, Indefinite-lived Intangible Assets Excluding Goodwill, Impairment Test Performed + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + 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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