Accounts Receivable, Contract Assets, and Contract Liabilities - Customer Credit Concentration (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Apr. 29, 2023	Oct. 29, 2022	Jan. 28, 2023
Concentration Risk
Amount	$ 1,184,871		$ 1,067,013
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | Lumen Technologies
Concentration Risk
Amount	$ 245,800		$ 189,300
% of Total	20.10%		17.40%
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | AT&T Inc.
Concentration Risk
Amount	$ 135,000		$ 136,200
% of Total	11.00%		12.50%
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | Comcast Corporation
Concentration Risk
Amount	$ 122,500		$ 125,200
% of Total	10.00%		11.50%
Customer Concentration Risk | Trade Accounts Receivable and Costs and Estimated Earnings | Windstream Corporation
Concentration Risk
Amount	$ 192,100		$ 153,200
% of Total	15.70%	14.00%