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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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Apr. 30, 2022 | May 01, 2021 | May 02, 2020
Allowance for uncollectible accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of period | $ 0.7 | $ 0.7 | $ 0.9
(Benefits)/ charges to income | 0.3 | 0.0 | (0.2)
Deductions | 0.0 | 0.0 | 0.0
Other | 0.0 | 0.0 | 0.0
Balance at end of period | 1.0 | 0.7 | 0.7
Deferred tax valuation allowance |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of period | 9.3 | 7.5 | 6.6
(Benefits)/ charges to income | (2.5) | 1.8 | 0.9
Deductions | 0.0 | 0.0 | 0.0
Other | 0.0 | 0.0 | 0.0
Balance at end of period | $ 6.8 | $ 9.3 | $ 7.5

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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(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: 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(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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