Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jan. 25, 2020	Jan. 25, 2020	Apr. 28, 2019
Revenue from Contract with Customer [Abstract]
Other receivables, included in other current assets	$ 25.3	$ 25.3	$ 17.0
Customer deposits, included in accrued expenses and other current liabilities	60.9	60.9	42.8
Deferred revenues, included in accrued expenses and other current liabilities	25.3	25.3	$ 17.0
Revenue recognized related to contract liabilities	$ 0.5	$ 55.0