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Nature of Operations - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Jun. 13, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | --- | --- | --- | ---
Assets Acquired: |  |  |  |  |
Goodwill | $ 1,042.0 |  | $ 1,049.0 | $ 1,052.0 | $ 1,009.5
Maxi-Metal |  |  |  |  |
Assets Acquired: |  |  |  |  |
Current assets, excluding cash of $1.7 |  | $ 7.5 |  |  |
Property, plant and equipment |  | 1.6 |  |  |
Goodwill | $ 7.4 | 7.4 |  |  |
Purchased intangible assets |  | 7.2 |  |  |
Total assets |  | 23.7 |  |  |
Liabilities Assumed: |  |  |  |  |
Current liabilities |  | 2.0 |  |  |
Long-term liabilities |  | 2.0 |  |  |
Total liabilities |  | 4.0 |  |  |
Net assets acquired |  | $ 19.7 |  |  |

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