Accounts Receivable, Contract Assets, and Contract Liabilities - Customer Credit Concentration (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 29, 2023	Jan. 28, 2023
Concentration Risk
Amount	$ 1,214,450	$ 1,067,013
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | Lumen Technologies
Concentration Risk
Amount	$ 315,300	$ 189,300
% of Total	24.70%	17.40%
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | AT&T Inc.
Concentration Risk
Amount	$ 132,400	$ 136,200
% of Total	10.40%	12.50%
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | Comcast Corporation
Concentration Risk
Amount	$ 125,900	$ 125,200
% of Total	9.90%	11.50%
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | Windstream Corporation
Concentration Risk
Amount	$ 96,500	$ 153,200
% of Total	7.60%	14.00%