Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 01, 2020	Jul. 29, 2019	Jul. 27, 2019	May 02, 2020
Segment Reporting Information [Line Items]
Net Sales	$ 190.9	$ 270.2	$ 270.2
Income (Loss) from Operations	13.8		38.6
Interest Expense, Net	1.6		2.9
Other (Income) Expense, Net	(3.4)		0.1
Income before Income Taxes	15.6		35.6
Identifiable Assets	1,418.2			$ 1,370.6
Auto
Segment Reporting Information [Line Items]
Net Sales	125.1	186.2	186.2
Income (Loss) from Operations	15.3		33.1
Interest Expense, Net	0.0		0.0
Other (Income) Expense, Net	0.0		0.0
Income before Income Taxes	0.0		0.0
Identifiable Assets	728.7			670.9
Auto
Segment Reporting Information [Line Items]
Net Sales	52.0	70.8	70.8
Income (Loss) from Operations	7.0		16.5
Interest Expense, Net	0.0		0.0
Other (Income) Expense, Net	0.0		0.0
Income before Income Taxes	0.0		0.0
Identifiable Assets	440.5			421.8
Auto
Segment Reporting Information [Line Items]
Net Sales	13.4	12.9	12.9
Income (Loss) from Operations	1.1		0.2
Interest Expense, Net	0.0		0.0
Other (Income) Expense, Net	0.0		0.0
Income before Income Taxes	0.0		0.0
Identifiable Assets	70.9			71.0
Auto
Segment Reporting Information [Line Items]
Net Sales	0.4	$ 0.3	0.3
Income (Loss) from Operations	(1.6)		(1.5)
Interest Expense, Net	0.0		0.0
Other (Income) Expense, Net	0.0		0.0
Income before Income Taxes	0.0		0.0
Identifiable Assets	8.2			8.8
Eliminations/Corporate
Segment Reporting Information [Line Items]
Net Sales	0.0		0.0
Income (Loss) from Operations	(8.0)		(9.7)
Interest Expense, Net	0.0		0.0
Other (Income) Expense, Net	0.0		0.0
Income before Income Taxes	0.0		0.0
Identifiable Assets	169.9			$ 198.1
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	190.9		270.2
Operating Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	126.4		187.5
Operating Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	52.4		71.6
Operating Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	13.4		12.9
Operating Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	0.4		0.3
Operating Segments | Eliminations/Corporate
Segment Reporting Information [Line Items]
Net Sales	(1.7)		(2.1)
Transfers between Segments
Segment Reporting Information [Line Items]
Net Sales	0.0		0.0
Transfers between Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	(1.3)		(1.3)
Transfers between Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	(0.4)		(0.8)
Transfers between Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	0.0		0.0
Transfers between Segments | Auto
Segment Reporting Information [Line Items]
Net Sales	0.0		0.0
Transfers between Segments | Eliminations/Corporate
Segment Reporting Information [Line Items]
Net Sales	$ 1.7		$ 2.1