Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	May 01, 2021
Allowance for uncollectible accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 1.0	$ 0.7	$ 0.7
(Benefits)/ charges to income	0.3	0.3	0.0
Deductions	0.0	0.0	0.0
Other	0.0	0.0	0.0
Balance at end of period	1.3	1.0	0.7
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	6.8	9.3	7.5
(Benefits)/ charges to income	0.0	(2.5)	1.8
Deductions	0.0	0.0	0.0
Other	0.0	0.0	0.0
Balance at end of period	$ 6.8	$ 6.8	$ 9.3