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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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May 02, 2020 | Apr. 27, 2019 | Apr. 28, 2018
Allowance for uncollectible accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | $ 0.9 | $ 0.5 | $ 0.6
Charged to Costs and Expenses | (0.2) | 0.2 | 0.0
Deductions | 0.0 | 0.0 | (0.1)
Other | 0.0 | 0.2 | 0.0
Balance at End of Period | 0.7 | 0.9 | 0.5
Deferred tax valuation allowance |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 6.3 | 2.5 | 1.9
Charged to Costs and Expenses | 0.7 | 0.0 | 0.6
Deductions | 0.0 | (1.0) | 0.0
Other | 0.0 | 4.8 | 0.0
Balance at End of Period | $ 7.0 | $ 6.3 | $ 2.5

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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