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Segments (Schedule of Segment Information) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net sales:
Total revenues		$ 228.3	$ 415.3	$ 594.6	$ 835.4
Segment operating (loss) income:
Total segment operating (loss) income		(20.9)	19.3	(7.9)	41.8
Other components of pension income and other postretirement benefits expense, net		1.8	1.5	3.6	2.8
Interest expense, net		(7.5)	(8.7)	(15.5)	(16.9)
(Loss) income before income taxes		(26.6)	12.1	(19.8)	27.7
Supply Technologies
Net sales:
Total revenues		94.4	161.5	235.2	326.8
Assembly Components
Net sales:
Total revenues		54.9	136.3	183.1	274.6
Engineered Products
Net sales:
Total revenues		79.0	117.5	176.3	234.0
Operating Segments
Segment operating (loss) income:
Total segment operating (loss) income		(15.1)	31.1	4.2	60.6
Operating Segments \| Supply Technologies
Segment operating (loss) income:
Total segment operating (loss) income		0.3	11.3	9.5	24.4
Operating Segments \| Assembly Components
Segment operating (loss) income:
Total segment operating (loss) income		(14.6)	8.3	(8.3)	16.6
Operating Segments \| Engineered Products
Segment operating (loss) income:
Total segment operating (loss) income		(0.8)	11.5	3.0	19.6
Segment Reconciling Items
Segment operating (loss) income:
Corporate costs		(5.8)	(7.5)	(12.1)	(14.5)
One-time net expense related to former President		$ 0.0	$ 4.3	$ 0.0	$ 4.3
President
Segment operating (loss) income:
One-time net expense related to former President	$ (4.3)
Payment	6.0
Reversal related to forfeitures	$ 1.7