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Restructuring and Acquisition-Related Costs - Restructuring Reserve Narrative (Details) - USD ($) $ in Millions | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 43.2 | $ 58.4 | $ 39.8 |
Minimum [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and related cost, expected cost remaining | 20.0 |  |  | $ 20.0
Maximum [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and related cost, expected cost remaining | 30.0 |  |  | 30.0
Driveline [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 4.7 | 19.3 | 6.4 |
Metal Forming [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 6.5 | 16.0 | 21.5 |
Casting [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | 0.7 |
Employee Severance [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 2.9 | 22.3 | 19.4 |
Other Restructuring [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 40.3 | $ 36.1 | $ 20.4 |
2020 Restructuring Plan [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 39.5 |  |  | $ 87.3
Emporium, Pennsylvania [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 3.7 |  |  |

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