Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 280
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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+ Details

Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 1,632.3	$ 1,570.7	$ 3,239.2	$ 3,064.6
North America [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,206.9	1,159.7	2,380.8	2,271.2
Asia [Member]
Disaggregation of Revenue [Line Items]
Net sales	149.1	129.0	299.8	241.5
Europe [Member]
Disaggregation of Revenue [Line Items]
Net sales	233.6	230.6	479.4	453.3
South America [Member]
Disaggregation of Revenue [Line Items]
Net sales	42.7	51.4	79.2	98.6
Driveline [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,124.3	1,086.4	2,230.7	2,100.2
Driveline [Member] \| North America [Member]
Disaggregation of Revenue [Line Items]
Net sales	849.2	827.1	1,677.2	1,610.1
Driveline [Member] \| Asia [Member]
Disaggregation of Revenue [Line Items]
Net sales	143.9	118.5	286.6	224.3
Driveline [Member] \| Europe [Member]
Disaggregation of Revenue [Line Items]
Net sales	110.5	111.4	232.0	211.2
Driveline [Member] \| South America [Member]
Disaggregation of Revenue [Line Items]
Net sales	20.7	29.4	34.9	54.6
Metal Forming [Member]
Disaggregation of Revenue [Line Items]
Net sales	508.0	484.3	1,008.5	964.4
Metal Forming [Member] \| North America [Member]
Disaggregation of Revenue [Line Items]
Net sales	357.7	332.6	703.6	661.1
Metal Forming [Member] \| Asia [Member]
Disaggregation of Revenue [Line Items]
Net sales	5.2	10.5	13.2	17.2
Metal Forming [Member] \| Europe [Member]
Disaggregation of Revenue [Line Items]
Net sales	123.1	119.2	247.4	242.1
Metal Forming [Member] \| South America [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 22.0	$ 22.0	$ 44.3	$ 44.0