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Goodwill and Other Intangibles (Tables) | 9 Months Ended
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Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Goodwill | The following table shows the changes in goodwill by reportable segment and in total:
|  | East |  |  | West |  |  |  |
|  | Group |  |  | Group |  |  | Total |
|  | (Dollars in Millions) |
Balance at January 1, 2024 |  | $ | 764 |  |  | $ | 2,625 |  |  | $ | 3,389 |
Acquisitions |  |  | 268 |  |  |  | 111 |  |  |  | 379 |
Balance at September 30, 2024 |  | $ | 1,032 |  |  | $ | 2,736 |  |  | $ | 3,768 |
Intangible Assets Acquired | Intangible assets acquired during 2024 are as follows:
(Dollars in Millions) |  | Amount |  |  | Weighted-average amortization period
Subject to amortization: |  |  |  |  |
Customer relationships |  | $ | 24 |  |  | 12 years
Not subject to amortization: |  |  |  |  |
Use rights |  |  | 5 |  |  | N/A
Total |  | $ | 29 |  |  |

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