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Acquisitions - Tekfor (Details) - USD ($) $ in Millions |  | 3 Months Ended | 4 Months Ended | 7 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 01, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2022 | Dec. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Business Acquisition [Line Items] |  |  |  |  |  |  |
Gain on bargain purchase of business |  | $ 0.0 | $ 1.4 |  |  | $ 0.0 | $ 13.0
Fair Value Inventory Adjustment for Tekfor Aquisition |  | $ 0.0 | 0.0 |  |  | 0.0 | 5.0
Tekfor Group |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Acquisition, Name of Acquired Entity | Tekfor Group |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 94.4 |  |  |  |  |  |
Business Acquisition, Description of Acquired Entity | Tekfor Group manufactures high-performance components, modules and fasteners, including traditional powertrain and driveline components (for both internal combustion and hybrid applications), and e-mobility components. Our acquisition of Tekfor contributes to diversifying our geographic and customer sales mix, while also increasing our electrification product portfolio. |  |  |  |  |  |
Cash and cash equivalents | $ 14.3 |  |  |  |  |  |
Accounts receivable | 33.7 |  |  |  |  |  |
Inventories | 46.3 |  |  |  |  |  |
Prepaid expenses and other long-term assets | 30.1 |  |  |  |  |  |
Deferred income tax assets | 5.0 |  |  |  |  |  |
Property, plant and equipment | 105.5 |  |  |  |  |  |
Total assets acquired | 234.9 |  |  |  |  |  |
Accounts payable | 33.5 |  |  |  |  |  |
Accrued expenses and other | 28.1 |  |  |  |  |  |
Debt | 23.4 |  |  |  |  |  |
Postretirement benefits and other long-term liabilities | 41.9 |  |  |  |  |  |
Net assets acquired | $ 108.0 |  |  |  |  |  |
Gain on bargain purchase of business |  |  | $ 13.0 | $ 13.0 | $ 13.6 |  | $ 13.0
Business Combination, Bargain Purchase, Gain Recognized, Description | The gain on bargain purchase of business was primarily the result of macroeconomic factors such as the supply chain disruptions impacting the automotive industry, including the conflict between Russia and Ukraine, the semiconductor supply shortage, and increasing input costs, including materials, freight and utilities. |  |  |  |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  | 121.0 |  | 299.0 |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |  |  |  | 10.0 |  | $ (7.0) |
Fair Value Inventory Adjustment for Tekfor Aquisition |  |  |  | $ 5.0 |  |  |

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