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Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 1,505.3	$ 1,504.9	$ 4,452.8	$ 4,744.1
North America [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,127.9	1,085.0	3,301.4	3,465.8
Asia [Member]
Disaggregation of Revenue [Line Items]
Net sales	129.2	155.4	415.9	455.2
Europe [Member]
Disaggregation of Revenue [Line Items]
Net sales	191.8	218.7	587.0	698.1
South America [Member]
Disaggregation of Revenue [Line Items]
Net sales	56.4	45.8	148.5	125.0
Driveline [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,050.6	1,042.3	3,089.1	3,273.0
Driveline [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Net sales	807.1	762.6	2,344.3	2,439.8
Driveline [Member] | Asia [Member]
Disaggregation of Revenue [Line Items]
Net sales	126.6	151.1	407.2	437.7
Driveline [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Net sales	84.7	105.7	257.2	337.7
Driveline [Member] | South America [Member]
Disaggregation of Revenue [Line Items]
Net sales	32.2	22.9	80.4	57.8
Metal Forming [Member]
Disaggregation of Revenue [Line Items]
Net sales	454.7	462.6	1,363.7	1,471.1
Metal Forming [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Net sales	320.8	322.4	957.1	1,026.0
Metal Forming [Member] | Asia [Member]
Disaggregation of Revenue [Line Items]
Net sales	2.6	4.3	8.7	17.5
Metal Forming [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Net sales	107.1	113.0	329.8	360.4
Metal Forming [Member] | South America [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 24.2	$ 22.9	$ 68.1	$ 67.2

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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