Revenue (Summary of Disaggregation of Revenue by Geographical Area) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues	$ 360.4	$ 340.2	$ 228.3	$ 366.3	$ 379.5	$ 403.4	$ 415.3	$ 420.1	$ 1,295.2	$ 1,618.3	$ 1,658.1
Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									510.1	611.5	636.8
Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									441.5	539.5	578.3
Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									343.6	467.3	$ 443.0
United States
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									795.4	1,063.9
United States | Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									314.0	404.5
United States | Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									302.3	388.1
United States | Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									179.1	271.3
Europe
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									161.5	192.8
Europe | Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									83.8	98.0
Europe | Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									13.2	14.6
Europe | Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									64.5	80.2
Asia
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									132.2	127.9
Asia | Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									43.3	40.3
Asia | Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									29.6	21.4
Asia | Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									59.3	66.2
Mexico
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									101.1	105.8
Mexico | Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									55.4	54.7
Mexico | Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									35.9	37.3
Mexico | Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									9.8	13.8
Canada
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									88.1	112.8
Canada | Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									9.8	12.2
Canada | Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									59.1	76.7
Canada | Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									19.2	23.9
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									16.9	15.1
Other | Supply Technologies Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									3.8	1.8
Other | Assembly Components Segment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									1.4	1.4
Other | Engineered Products
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									$ 11.7	$ 11.9