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Customer Concentration and Revenue Information (Tables) | 12 Months Ended
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Jan. 25, 2025
Revenue from Contract with Customer [Abstract] |
Customer Credit Concentration | Customers whose contract revenues exceeded 10% of total contract revenues during fiscal 2025, fiscal 2024, or fiscal 2023, as well as total contract revenues from all other customers combined, were as follows:
| Fiscal Year Ended
| January 25, 2025 |  | January 27, 2024 |  | January 28, 2023
| Amount | % of Total |  | Amount | % of Total |  | Amount | % of Total
AT&T Inc. | $ | 942.8 |  | 20.1 | % |  | $ | 706.5 |  | 16.9 | % |  | $ | 958.0 |  | 25.2 | %
Lumen Technologies | 570.4 |  | 12.1 | % |  | 650.6 |  | 15.6 | % |  | 483.5 |  | 12.7 | %
Comcast Corporation | 401.6 |  | 8.5 | % |  | 448.6 |  | 10.7 | % |  | 430.6 |  | 11.3 | %
Total other customers combined | 2,787.2 |  | 59.3 | % |  | 2,369.9 |  | 56.8 | % |  | 1,936.4 |  | 50.8 | %
Total contract revenues | $ | 4,702.0 |  | 100.0% |  | $ | 4,175.6 |  | 100.0% |  | $3,808.5 | 100.0%
Total contract revenues by customer type during fiscal 2025, fiscal 2024, and fiscal 2023, were as follows (dollars in millions):
| Fiscal Year Ended
| January 25, 2025 |  | January 27, 2024 |  | January 28, 2023
| Amount | % of Total |  | Amount | % of Total |  | Amount | % of Total
Telecommunications | $ | 4,250.2 |  | 90.4% |  | $ | 3,743.3 |  | 89.6% |  | $ | 3,415.8 |  | 89.7%
Underground facility locating | 314.7 |  | 6.7% |  | 295.3 |  | 7.1% |  | 274.9 |  | 7.2%
Electrical and gas utilities and other | 137.1 |  | 2.9% |  | 137.0 |  | 3.3% |  | 117.8 |  | 3.1%
Total contract revenues | $ | 4,702.0 |  | 100.0% |  | $ | 4,175.6 |  | 100.0% |  | $ | 3,808.5 |  | 100.0%

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