Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 01, 2020	Jul. 29, 2019	Jul. 27, 2019
Disaggregation of Revenue [Line Items]
Net Sales	$ 190.9	$ 270.2	$ 270.2
Goods Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Net Sales	185.9	263.0
Goods Transferred Over Time
Disaggregation of Revenue [Line Items]
Net Sales	5.0	7.2
North America
Disaggregation of Revenue [Line Items]
Net Sales	110.5	183.3
Europe & Africa
Disaggregation of Revenue [Line Items]
Net Sales	41.6	61.6
Asia
Disaggregation of Revenue [Line Items]
Net Sales	38.8	25.3
Auto
Disaggregation of Revenue [Line Items]
Net Sales	125.1	186.2	186.2
Auto | Goods Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Net Sales	120.1	179.0
Auto | Goods Transferred Over Time
Disaggregation of Revenue [Line Items]
Net Sales	5.0	7.2
Auto | North America
Disaggregation of Revenue [Line Items]
Net Sales	76.3	121.6
Auto | Europe & Africa
Disaggregation of Revenue [Line Items]
Net Sales	28.8	49.0
Auto | Asia
Disaggregation of Revenue [Line Items]
Net Sales	20.0	15.6
Auto
Disaggregation of Revenue [Line Items]
Net Sales	52.0	70.8	70.8
Auto | Goods Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Net Sales	52.0	70.8
Auto | North America
Disaggregation of Revenue [Line Items]
Net Sales	20.6	48.9
Auto | Europe & Africa
Disaggregation of Revenue [Line Items]
Net Sales	12.8	12.5
Auto | Asia
Disaggregation of Revenue [Line Items]
Net Sales	18.6	9.4
Auto
Disaggregation of Revenue [Line Items]
Net Sales	13.4	12.9	12.9
Auto | Goods Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Net Sales	13.4	12.9
Auto | North America
Disaggregation of Revenue [Line Items]
Net Sales	13.2	12.5
Auto | Europe & Africa
Disaggregation of Revenue [Line Items]
Net Sales		0.1
Auto | Asia
Disaggregation of Revenue [Line Items]
Net Sales	0.2	0.3
Auto
Disaggregation of Revenue [Line Items]
Net Sales	0.4	0.3	$ 0.3
Auto | Goods Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Net Sales	0.4	0.3
Auto | North America
Disaggregation of Revenue [Line Items]
Net Sales	$ 0.4	$ 0.3