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BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 01, 2022 | Jul. 01, 2021 | Sep. 30, 2022 | Sep. 30, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Aug. 10, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price, net |  |  |  |  | $ 1,426.1 | $ 47.6 |  |
Debt proceeds |  |  |  |  | 1,300.0 | $ 0.0 |  |
Goodwill |  |  | $ 1,491.0 | $ 1,491.0 | 1,491.0 |  |  | $ 1,284.8
Specialty Engineered Materials |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | $ 500.3 | $ 500.3 | $ 500.3 |  |  | $ 236.3
Senior secured term loan due 2029 | Secured Debt |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Debt proceeds | $ 575.0 |  |  |  |  |  |  |
7.125% senior notes due 2030 | Senior Notes |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Debt proceeds | $ 725.0 |  |  |  |  |  |  |
Interest rate, stated percentage | 7.125% |  | 7.125% | 7.125% | 7.125% |  | 7.125% |
APM Acquisition |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price, net | $ 1,400.0 |  |  |  |  |  |  |
Goodwill |  |  | $ 277.1 | $ 277.1 | $ 277.1 |  |  |
Revenue since acquisition date |  |  | 32.3 |  |  |  |  |
Income from continuing operations since acquisition date |  |  | $ 7.0 |  |  |  |  |
Pro forma income from continuing operations before income taxes |  |  |  |  | 10.6 |  |  |
Acquisition costs |  |  |  | $ 8.1 | $ 12.7 |  |  |
APM Acquisition | Specialty Engineered Materials |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill | $ 277.1 |  |  |  |  |  |  |
APM Acquisition | Minimum |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Intangible asset, weighted average lives (years) | 16 years |  |  |  |  |  |  |
APM Acquisition | Maximum |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Intangible asset, weighted average lives (years) | 20 years |  |  |  |  |  |  |
Magna Colours |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price, net |  | $ 47.6 |  |  |  |  |  |
Goodwill |  | 22.0 |  |  |  |  |  |
Intangible assets |  | $ 27.5 |  |  |  |  |  |
Magna Colours | Minimum |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Intangible asset, weighted average lives (years) |  | 10 years |  |  |  |  |  |
Magna Colours | Maximum |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Intangible asset, weighted average lives (years) |  | 20 years |  |  |  |  |  |

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