Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
NET SALES OF CONTINUING OPERATIONS:
Total revenues	$ 423.5	$ 357.7
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	20.2	5.4
Gain on sale of assets	0.8	0.0
Other components of pension income and other postretirement benefits expense, net	0.7	2.8
Interest expense, net	(10.7)	(7.1)
Income from continuing operations before income taxes	10.2	1.1
Operating Segments
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	26.3	13.4
Corporate, non-segment
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Corporate costs	(6.9)	(8.0)
Supply Technologies
NET SALES OF CONTINUING OPERATIONS:
Total revenues	195.8	168.8
Supply Technologies | Operating Segments
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	14.0	12.0
Assembly Components
NET SALES OF CONTINUING OPERATIONS:
Total revenues	110.4	97.9
Assembly Components | Operating Segments
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	7.3	(0.4)
Engineered Products
NET SALES OF CONTINUING OPERATIONS:
Total revenues	117.3	91.0
Engineered Products | Operating Segments
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	$ 5.0	$ 1.8