Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
NET SALES OF CONTINUING OPERATIONS:
Total revenues	$ 417.6	$ 423.5
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	24.0	20.2
Gain on sale of assets	0.0	0.8
Other components of pension and other postretirement benefits income, net	1.3	0.7
Interest expense, net	(11.9)	(10.7)
Income from continuing operations before income taxes	13.4	10.2
Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	417.6	423.5
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	31.6	26.3
Corporate, non-segment
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Corporate costs	(7.6)	(6.9)
Supply Technologies
NET SALES OF CONTINUING OPERATIONS:
Total revenues	196.9	195.8
Supply Technologies | Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	196.9	195.8
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	19.5	14.0
Assembly Components
NET SALES OF CONTINUING OPERATIONS:
Total revenues	107.2	110.4
Assembly Components | Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	107.2	110.4
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	8.6	7.3
Engineered Products
NET SALES OF CONTINUING OPERATIONS:
Total revenues	113.5	117.3
Engineered Products | Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	113.5	117.3
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	$ 3.5	$ 5.0