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Shareholders' Equity - Stock-based Compensation Expense (Details) - 2014 Incentive Plan - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ (2.1)	$ 2.7	$ 1.8	$ 9.4
RSUs | Management
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ (2.1)	$ 2.7	0.2	7.8
RSUs | Non-employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			0.6	0.6
RSUs | Deferred Non-Employee Director Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 1.0	$ 1.0

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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