Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
NET SALES OF CONTINUING OPERATIONS:
Total revenues	$ 417.6	$ 418.8	$ 1,267.8	$ 1,270.4
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	23.6	27.0	72.2	66.4
Gains on sales of assets	0.0	0.0	0.0	0.8
Other components of pension and other postretirement benefits income, net	1.1	0.6	3.8	1.9
Interest expense, net	(12.1)	(11.6)	(36.0)	(33.4)
Income from continuing operations before income taxes	12.6	16.0	40.0	34.9
Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	417.6	418.8	1,267.8	1,270.4
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	31.4	33.9	95.2	87.2
Corporate, Non-segment
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Corporate costs	(7.8)	(6.9)	(23.0)	(21.6)
Supply Technologies
NET SALES OF CONTINUING OPERATIONS:
Total revenues	194.5	192.8	594.0	585.9
Supply Technologies | Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	194.5	192.8	594.0	585.9
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	20.5	15.6	59.0	45.0
Assembly Components
NET SALES OF CONTINUING OPERATIONS:
Total revenues	98.7	108.4	309.0	330.8
Assembly Components | Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	98.7	108.4	309.0	330.8
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	6.1	11.2	21.6	26.9
Engineered Products
NET SALES OF CONTINUING OPERATIONS:
Total revenues	124.4	117.6	364.8	353.7
Engineered Products | Operating Segments
NET SALES OF CONTINUING OPERATIONS:
Total revenues	124.4	117.6	364.8	353.7
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES:
Total segment operating income	$ 4.8	$ 7.1	$ 14.6	$ 15.3