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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2025
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, 2025 |  |  | December 31, 2024 |
|  | 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 |  |  | 6.4 |  |  | $ | 546.0 |  |  | $ | 371.3 |  |  |  | 6.6 |  |  | $ | 546.0 |  |  | $ | 362.4 |
Trademarks and trade names |  |  | 5.9 |  |  |  | 41.3 |  |  |  | 33.5 |  |  |  | 6.0 |  |  |  | 41.3 |  |  |  | 33.0 |
Other |  |  | 1.7 |  |  |  | 4.4 |  |  |  | 4.4 |  |  |  | 1.9 |  |  |  | 4.4 |  |  |  | 4.4 |
Total intangible assets (excluding goodwill) |  |  | 6.4 |  |  | $ | 591.7 |  |  | $ | 409.2 |  |  |  | 6.6 |  |  | $ | 591.7 |  |  | $ | 399.8 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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