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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Components of Intangible Assets | The weighted average remaining useful life, gross carrying amount, and accumulated amortization of our intangible assets were as follows (dollars in millions):
|  | March 31, 2024 |  |  | December 31, 2023 |
|  | Weighted Average Remaining Useful Life (in Years) |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Weighted Average Remaining Useful Life (in Years) |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |
Customer relationships |  |  | 7.2 |  |  | $ | 546.0 |  |  | $ | 335.8 |  |  |  | 7.4 |  |  | $ | 546.0 |  |  | $ | 326.9 |
Trademarks and trade names |  |  | 6.4 |  |  |  | 41.3 |  |  |  | 31.4 |  |  |  | 6.5 |  |  |  | 41.3 |  |  |  | 30.9 |
Other |  |  | 2.7 |  |  |  | 4.4 |  |  |  | 4.4 |  |  |  | 2.9 |  |  |  | 4.4 |  |  |  | 4.3 |
Total intangible assets (excluding goodwill) |  |  | 7.1 |  |  | $ | 591.7 |  |  | $ | 371.6 |  |  |  | 7.3 |  |  | $ | 591.7 |  |  | $ | 362.1 |

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