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Customer Concentration and Revenue Information (Tables) | 12 Months Ended
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Jan. 27, 2024
Revenue from Contract with Customer [Abstract] |
Customer Credit Concentration | Customers whose combined amounts of accounts receivable and contract assets, net exceeded 10% of total combined accounts receivable and contract assets, net as of January 27, 2024 or January 28, 2023 were as follows (dollars in millions):
| January 27, 2024 |  | January 28, 2023
| Amount |  | % of Total |  | Amount |  | % of Total
Lumen Technologies | $ | 345.0 |  |  | 27.4 | % |  | $ | 189.3 |  |  | 17.4 | %
Comcast Corporation | $ | 104.7 |  |  | 8.3 | % |  | $ | 125.2 |  |  | 11.5 | %
AT&T Inc. | $ | 90.3 |  |  | 7.2 | % |  | $ | 136.2 |  |  | 12.5 | %
Customers whose contract revenues exceeded 10% of total contract revenues during fiscal 2024, fiscal 2023, or fiscal 2022, as well as total contract revenues from all other customers combined, were as follows:
| Fiscal Year Ended
| January 27, 2024 |  | January 28, 2023 |  | January 29, 2022
| Amount | % of Total |  | Amount | % of Total |  | Amount | % of Total
AT&T Inc. | $ | 706.5 |  | 16.9 | % |  | $ | 958.0 |  | 25.2 | % |  | $ | 735.2 |  | 23.5 | %
Lumen Technologies | 650.6 |  | 15.6 | % |  | 483.5 |  | 12.7 | % |  | 373.0 |  | 11.9 | %
Comcast Corporation | 448.6 |  | 10.7 | % |  | 430.6 |  | 11.3 | % |  | 473.8 |  | 15.1 | %
Verizon Communications Inc. | 373.8 |  | 9.0 | % |  | 347.3 |  | 9.1 | % |  | 352.6 |  | 11.3 | %
Total other customers combined | 1,996.1 |  | 47.8 | % |  | 1,589.1 |  | 41.7 | % |  | 1,195.9 |  | 38.2 | %
Total contract revenues | $ | 4,175.6 |  | 100.0% |  | $ | 3,808.5 |  | 100.0% |  | $3,130.5 | 100.0%
Total contract revenues by customer type during fiscal 2024, fiscal 2023, and fiscal 2022, were as follows (dollars in millions):
| Fiscal Year Ended
| January 27, 2024 |  | January 28, 2023 |  | January 29, 2022
| Amount | % of Total |  | Amount | % of Total |  | Amount | % of Total
Telecommunications | $ | 3,743.3 |  | 89.6% |  | $ | 3,415.8 |  | 89.7% |  | $ | 2,777.6 |  | 88.7%
Underground facility locating | 295.3 |  | 7.1% |  | 274.9 |  | 7.2% |  | 255.4 |  | 8.2%
Electrical and gas utilities and other | 137.0 |  | 3.3% |  | 117.8 |  | 3.1% |  | 97.5 |  | 3.1%
Total contract revenues | $ | 4,175.6 |  | 100.0% |  | $ | 3,808.5 |  | 100.0% |  | $ | 3,130.5 |  | 100.0%

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