Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	May 02, 2026	Jan. 31, 2026
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 1,284,172	$ 1,284,172
Accumulated Amortization	416,518	358,224
Intangible Assets, Net	867,654	925,948
UtiliQuest
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	4,700	4,700
Accumulated Amortization	0	0
Intangible Assets, Net	$ 4,700	4,700
Customer relationships
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	13 years 4 months 24 days
Intangible Assets, Gross (Excluding Goodwill)	$ 1,032,417	1,032,417
Accumulated Amortization	330,753	306,094
Intangible Assets, Net	$ 701,664	726,323
Trade names
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	13 years 10 months 24 days
Intangible Assets, Gross (Excluding Goodwill)	$ 54,080	54,080
Accumulated Amortization	10,989	10,178
Intangible Assets, Net	$ 43,091	43,902
Backlog Intangibles
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	1 year 1 month 6 days
Intangible Assets, Gross (Excluding Goodwill)	$ 192,900	192,900
Accumulated Amortization	74,724	41,903
Intangible Assets, Net	$ 118,176	150,997
Non-compete agreements
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	1 year 6 months
Intangible Assets, Gross (Excluding Goodwill)	$ 75	75
Accumulated Amortization	52	49
Intangible Assets, Net	$ 23	$ 26

Finite-Lived and Indefinite-Lived Intangible Assets

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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