Accounts Receivable, Contract Assets, and Contract Liabilities - Customer Credit Concentration (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 29, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	$ 1,243,256	$ 1,067,013
% of Total	100.00%	100.00%	100.00%
Lumen Technologies | Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	$ 345,000	$ 189,300
% of Total	27.40%	17.40%
Comcast Corporation | Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	$ 104,700	$ 125,200
% of Total	8.30%	11.50%
AT&T Inc. | Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	$ 90,300	$ 136,200
% of Total	7.20%	12.50%