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Acquisitions - Acquired Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Oct. 28, 2023
Business Acquisition [Line Items]
Intangible assets	$ 142.2
Customer relationships
Business Acquisition [Line Items]
Estimated Useful Life (in years)	12 years
Intangible assets	$ 114.3
Trade names, finite
Business Acquisition [Line Items]
Estimated Useful Life (in years)	10 years
Intangible assets	$ 1.1
Bigham
Business Acquisition [Line Items]
Intangible assets		$ 42.2	$ 42.2
Bigham | Customer relationships
Business Acquisition [Line Items]
Intangible assets		26.8
Bigham | Contract backlog
Business Acquisition [Line Items]
Estimated Useful Life (in years)	3 years
Intangible assets		11.6
Bigham | Trade names, finite
Business Acquisition [Line Items]
Intangible assets		$ 3.8
First and Second Quarter Fiscal Year 2025 Acquisition | Contract backlog
Business Acquisition [Line Items]
Estimated Useful Life (in years)	9 months 18 days
Intangible assets	$ 0.5
Third Quarter Fiscal 2025 Acquisition | Contract backlog
Business Acquisition [Line Items]
Estimated Useful Life (in years)	2 years
Intangible assets	$ 26.3

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-5

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479303/805-10-55-37

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-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

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