Accounts Receivable, Contract Assets, and Contract Liabilities - Concentration Risk (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Aug. 01, 2026	Jan. 31, 2026
Concentration Risk
Accounts receivable, after allowance for credit loss, current	$ 2,277,804	$ 1,696,973
AT&T Inc. \| Trade Accounts Receivable and Costs and Estimated Earnings \| Customer Concentration Risk
Concentration Risk
Accounts receivable, after allowance for credit loss, current	$ 247,400	$ 153,400
Concentration risk, percentage	11.00%	9.00%
Charter Communications, Inc. \| Trade Accounts Receivable and Costs and Estimated Earnings \| Customer Concentration Risk
Concentration Risk
Accounts receivable, after allowance for credit loss, current	$ 204,300	$ 246,400
Concentration risk, percentage	9.10%	14.50%
Lumen Technologies, Inc. \| Trade Accounts Receivable and Costs and Estimated Earnings \| Customer Concentration Risk
Concentration Risk
Accounts receivable, after allowance for credit loss, current	$ 301,400	$ 259,000
Concentration risk, percentage	13.40%	15.20%
Verizon Communications, Inc. \| Trade Accounts Receivable and Costs and Estimated Earnings \| Customer Concentration Risk
Concentration Risk
Accounts receivable, after allowance for credit loss, current	$ 241,900	$ 173,600
Concentration risk, percentage	10.70%	10.20%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Name Accounting Standards Codification
-Section 50
-Paragraph 18
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 275
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

+ Details

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References + Details