Acquisitions, Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands			12 Months Ended
	May 28, 2021	Nov. 05, 2020	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Business Acquisition [Line Items]
Goodwill			$ 1,416,920	$ 1,401,628	$ 1,334,888
Fair value of replacement equity awards attributable to pre-acquisition service				939	2,313
Amortization of intangible assets			$ 56,400	$ 57,800	$ 57,700
Developed technology
Business Acquisition [Line Items]
Acquired intangible assets, remaining useful life			36 months	46 months
Fiscal 2023
Business Acquisition [Line Items]
Percentage of voting interests acquired			100.00%
Purchase price			$ 23,200
Purchase price paid in cash			23,200
Goodwill			15,300
Fiscal 2023 | Developed technology
Business Acquisition [Line Items]
Acquired fair value of finite-lived intangible assets			$ 11,200
Acquired intangible assets, remaining useful life			3 years
TruSTAR
Business Acquisition [Line Items]
Percentage of voting interests acquired	100.00%
Purchase price	$ 82,100
Purchase price paid in cash	81,200
Acquired fair value of finite-lived intangible assets	16,500
Goodwill	66,700
Net assets (liabilities) acquired	1,100
TruSTAR | Developed technology
Business Acquisition [Line Items]
Acquired fair value of finite-lived intangible assets	$ 10,100
Acquired intangible assets, remaining useful life	36 months
Rigor
Business Acquisition [Line Items]
Percentage of voting interests acquired		100.00%
Purchase price		$ 37,600
Purchase price paid in cash		37,600
Acquired fair value of finite-lived intangible assets		15,400
Goodwill		23,100
Net assets (liabilities) acquired		900
Net deferred tax liabilities assumed		1,800
Rigor | Developed technology
Business Acquisition [Line Items]
Acquired fair value of finite-lived intangible assets		$ 10,700
Acquired intangible assets, remaining useful life		36 months
Plumbr And Flowmill
Business Acquisition [Line Items]
Percentage of voting interests acquired					100.00%
Purchase price					$ 31,600
Purchase price paid in cash					24,400
Goodwill					19,000
Net assets (liabilities) acquired					2,900
Net deferred tax liabilities assumed					500
Fair value of replacement equity awards attributable to pre-acquisition service					4,900
Fair value of replacement equity awards attributable to pre-acquisition service					2,300
Plumbr And Flowmill | Developed technology
Business Acquisition [Line Items]
Acquired fair value of finite-lived intangible assets					$ 10,200
Acquired intangible assets, remaining useful life					3 years