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Customer Concentration and Revenue Information - Revenue Concentration Risk (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 26, 2024	Oct. 28, 2023	Oct. 26, 2024	Oct. 28, 2023
Concentration Risk
Contract revenues	$ 1,272,007	$ 1,136,110	$ 3,617,489	$ 3,223,119
Revenue Benchmark | Customer Concentration Risk
Concentration Risk
Contract revenues	$ 1,272,000	$ 1,136,100	$ 3,617,500	$ 3,223,100
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Revenue Benchmark | Customer Concentration Risk | AT&T Inc.
Concentration Risk
Contract revenues	$ 265,600	$ 145,100	$ 691,300	$ 543,800
Concentration risk, percentage	20.90%	12.80%	19.10%	16.90%
Revenue Benchmark | Customer Concentration Risk | Lumen Technologies
Concentration Risk
Contract revenues	$ 146,400	$ 187,600	$ 466,900	$ 486,500
Concentration risk, percentage	11.50%	16.50%	12.90%	15.10%
Revenue Benchmark | Customer Concentration Risk | Comcast Corporation
Concentration Risk
Contract revenues	$ 102,700	$ 111,200	$ 313,300	$ 351,300
Concentration risk, percentage	8.10%	9.80%	8.70%	10.90%
Revenue Benchmark | Customer Concentration Risk | Total other customers combined
Concentration Risk
Contract revenues	$ 757,300	$ 692,200	$ 2,146,000	$ 1,841,500
Concentration risk, percentage	59.50%	60.90%	59.30%	57.10%

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