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Restructuring Reserve Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2020
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | $ 14.7 | $ 8.4 |
Minimum [Member] | Forecast [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Expected Cost |  |  | $ 45.0
Maximum [Member] | Forecast [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Expected Cost |  |  | $ 55.0
Driveline [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 6.8 | 0.4 |
Metal Forming [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 5.2 | 4.8 |
2020 Restructuring Plan [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 8.7 |  |
Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 2.2 | 4.1 |
Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 12.5 | $ 4.3 |
Contractual Wage and Benefit Continuation Costs [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | $ 6.5 |  |

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