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Intangible Assets and Goodwill - Schedule of Identifiable Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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May. 02, 2015 | May. 03, 2014
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 42.2 | $ 42.5
Accumulated Amortization | 30.9 | 29.5
Net | 11.3 | 13.0
Indefinite-lived trade names | 1.8 | 1.8
Customer relationships and agreements |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 16.3 | 16.6
Accumulated Amortization | 15.0 | 14.7
Net | $ 1.3 | $ 1.9
Wtd. Avg. Remaining Amortization Periods | 8 years 9 months 18 days | 9 years 10 months 18 days
Trade names, patents and technology licenses |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 25.8 | $ 25.8
Accumulated Amortization | 15.8 | 14.8
Net | $ 10.0 | $ 11.0
Wtd. Avg. Remaining Amortization Periods | 3 years 4 months 6 days | 9 years 9 months 18 days
Covenants not to compete |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 0.1 | $ 0.1
Accumulated Amortization | 0.1 | 0.0
Net | $ 0.0 | $ 0.1
Wtd. Avg. Remaining Amortization Periods | 2 years 5 months | 3 years 5 months

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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