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Customer Concentration and Revenue Information - Revenue Concentration Risk (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 27, 2024	Jul. 29, 2023
Concentration Risk
Contract revenues	$ 1,203,059	$ 1,041,535	$ 2,345,482	$ 2,087,009
Revenue Benchmark | Customer Concentration Risk
Concentration Risk
Contract revenues	$ 1,203,100	$ 1,041,500	$ 2,345,500	$ 2,087,000
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Revenue Benchmark | Customer Concentration Risk | AT&T Inc.
Concentration Risk
Contract revenues	$ 210,200	$ 174,300	$ 425,700	$ 398,700
Concentration risk, percentage	17.50%	16.70%	18.20%	19.10%
Revenue Benchmark | Customer Concentration Risk | Lumen Technologies
Concentration Risk
Contract revenues	$ 163,700	$ 162,500	$ 320,500	$ 298,900
Concentration risk, percentage	13.60%	15.60%	13.70%	14.30%
Revenue Benchmark | Customer Concentration Risk | Comcast Corporation
Concentration Risk
Contract revenues	$ 105,600	$ 119,500	$ 210,600	$ 240,100
Concentration risk, percentage	8.80%	11.50%	9.00%	11.50%
Revenue Benchmark | Customer Concentration Risk | Verizon Communications Inc.
Concentration Risk
Contract revenues	$ 85,300	$ 104,900	$ 163,500	$ 204,900
Concentration risk, percentage	7.10%	10.10%	7.00%	9.80%
Revenue Benchmark | Customer Concentration Risk | Total other customers combined
Concentration Risk
Contract revenues	$ 638,300	$ 480,300	$ 1,225,200	$ 944,400
Concentration risk, percentage	53.00%	46.10%	52.10%	45.30%

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