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Restructuring Reserve Narrative (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2020
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | $ 24.0 | $ 17.1 |
Minimum [Member] | Forecast [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Expected Cost |  |  | $ 70.0
Maximum [Member] | Forecast [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Expected Cost |  |  | $ 80.0
Driveline [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 9.9 | 1.5 |
Metal Forming [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 10.4 | 9.8 |
Casting [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges |  | 0.7 |
2020 Restructuring Plan [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 16.2 |  |
Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 16.3 | 8.2 |
Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | $ 7.7 | $ 8.9 |

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- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(d)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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