Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net sales:
Net sales	$ 435.8	$ 358.5	$ 1,282.8	$ 1,068.1
Segment operating income (loss):
Operating income (loss)	7.1	(4.8)	23.0	4.4
Gain on sale of assets	0.0	0.0	2.9	0.0
Other components of pension income and other postretirement benefits expense, net	2.7	2.4	8.3	7.3
Interest expense, net	(9.6)	(7.6)	(25.6)	(22.4)
Income (loss) before income taxes	0.2	(10.0)	5.7	(10.7)
Operating Segments
Net sales:
Net sales	435.8	358.5	1,282.8	1,068.1
Segment operating income (loss):
Operating income (loss)	14.5	2.4	42.6	23.3
Segment Reconciling Items
Segment operating income (loss):
Corporate costs	(7.4)	(7.2)	(22.5)	(18.9)
Supply Technologies
Net sales:
Net sales	185.9	154.0	530.5	466.7
Supply Technologies | Operating Segments
Net sales:
Net sales	185.9	154.0	530.5	466.7
Segment operating income (loss):
Operating income (loss)	10.7	10.7	35.4	33.2
Assembly Components
Net sales:
Net sales	153.0	120.2	465.8	355.7
Assembly Components | Operating Segments
Net sales:
Net sales	153.0	120.2	465.8	355.7
Segment operating income (loss):
Operating income (loss)	(2.0)	(8.9)	(7.5)	(8.6)
Engineered Products
Net sales:
Net sales	96.9	84.3	286.5	245.7
Engineered Products | Operating Segments
Net sales:
Net sales	96.9	84.3	286.5	245.7
Segment operating income (loss):
Operating income (loss)	$ 5.8	$ 0.6	$ 14.7	$ (1.3)