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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jul. 28, 2018	Apr. 28, 2018
Finite-lived Intangible Assets [Roll Forward]
Gross	$ 101.0	$ 102.1
Accumulated Amortization	42.8	41.1
Net	58.2	61.0
Customer Relationships and Agreements
Finite-lived Intangible Assets [Roll Forward]
Gross	63.3	64.4
Accumulated Amortization	19.0	18.1
Net	$ 44.3	$ 46.3
Wtd. Avg. Remaining Amortization Periods (Years)	12 years 1 month 3 days	12 years 4 months
Trade Names, Patents and Technology Licenses
Finite-lived Intangible Assets [Roll Forward]
Gross	$ 37.7	$ 37.7
Accumulated Amortization	23.8	23.0
Net	$ 13.9	$ 14.7
Wtd. Avg. Remaining Amortization Periods (Years)	5 years 2 months 9 days	5 years 3 months 15 days

X

- Definition

Finite-Lived Intangible Assets, Weighted Average Remaining Amortization Period

+ References

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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=66006027&loc=d3e16323-109275

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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=66006027&loc=d3e16323-109275

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- Definition

Amount after 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=66006027&loc=d3e16323-109275

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- Definition

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