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Customer Concentration and Revenue Information (Tables) | 9 Months Ended
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Oct. 26, 2024
Risks and Uncertainties [Abstract] |
Schedule that Represents A Significant Portion of the Company’s Customer Base and Each Over 10% of Total Revenue | Customers whose contract revenues exceeded 10% of total contract revenues during the three and nine months ended October 26, 2024 or October 28, 2023, as well as total contract revenues from all other customers combined, were as follows (dollars in millions):
| For the Three Months Ended |  | For the Nine Months Ended
| October 26, 2024 |  | October 28, 2023 |  | October 26, 2024 |  | October 28, 2023
| Amount |  | % of Total |  | Amount |  | % of Total |  | Amount |  | % of Total |  | Amount |  | % of Total
AT&T Inc. | $ | 265.6 |  |  | 20.9% |  | $ | 145.1 |  |  | 12.8% |  | $ | 691.3 |  |  | 19.1% |  | $ | 543.8 |  |  | 16.9%
Lumen Technologies | 146.4 |  |  | 11.5 |  | 187.6 |  |  | 16.5 |  | 466.9 |  |  | 12.9 |  | 486.5 |  |  | 15.1
Comcast Corporation | 102.7 |  |  | 8.1 |  | 111.2 |  |  | 9.8 |  | 313.3 |  |  | 8.7 |  | 351.3 |  |  | 10.9
Total other customers combined | 757.3 |  |  | 59.5 |  | 692.2 |  | 60.9 |  | 2,146.0 |  |  | 59.3 |  | 1,841.5 |  |  | 57.1
Total contract revenues | $ | 1,272.0 |  |  | 100.0% |  | $ | 1,136.1 |  |  | 100.0% |  | $ | 3,617.5 |  |  | 100.0% |  | $ | 3,223.1 |  |  | 100.0%
Total contract revenues by customer type during the three and nine months ended October 26, 2024 and October 28, 2023 were as follows (dollars in millions):
| For the Three Months Ended |  | For the Nine Months Ended
| October 26, 2024 |  | October 28, 2023 |  | October 26, 2024 |  | October 28, 2023
| Amount |  | % of Total |  | Amount |  | % of Total |  | Amount |  | % of Total |  | Amount |  | % of Total
Telecommunications | $ | 1,151.8 |  |  | 90.6% |  | $ | 1,023.2 |  |  | 90.1% |  | $ | 3,264.8 |  |  | 90.3% |  | $ | 2,888.5 |  |  | 89.6%
Underground facility locating | 81.3 |  |  | 6.4 |  | 76.9 |  |  | 6.7 |  | 244.4 |  |  | 6.7 |  | 226.6 |  |  | 7.0
Electrical and gas utilities and other | 38.9 |  |  | 3.0 |  | 36.0 |  |  | 3.2 |  | 108.3 |  |  | 3.0 |  | 108.0 |  |  | 3.4
Total contract revenues | $ | 1,272.0 |  |  | 100.0% |  | $ | 1,136.1 |  |  | 100.0% |  | $ | 3,617.5 |  |  | 100.0% |  | $ | 3,223.1 |  |  | 100.0%

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