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Property, Plant and Equipment - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
May 02, 2020
Apr. 27, 2019
Apr. 28, 2018
Property Plant And Equipment [Abstract]      
Depreciation $ 29.3 $ 27.2 $ 22.5
Capital expenditures recorded in accounts payable $ 5.8 $ 6.4