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Acquisitions - Narrative (Details) $ in Thousands				12 Months Ended
Acquisitions - Narrative (Details) $ in Thousands	Nov. 20, 2024 USD ($)	Mar. 26, 2024 USD ($)	Sep. 28, 2023 USD ($)	Jan. 31, 2025 USD ($) reporting_unit	Jan. 31, 2024 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill				$ 912,805	$ 638,041
Number of reporting units \| reporting_unit				1
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life				55 months	60 months
A.S. Adaptive Shield Ltd.
Acquired Finite-Lived Intangible Assets [Line Items]
Voting equity interest acquired	100.00%
Business combination, consideration transferred	$ 213,700
Cash acquired	13,700
Fair value of replacement equity awards	700
Fair Value	31,100
Net tangible liabilities acquired	7,700
Goodwill	191,000
Acquisition related costs				$ 2,700
A.S. Adaptive Shield Ltd. \| Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 23,600
Weighted average useful life	72 months
Flow Security
Acquired Finite-Lived Intangible Assets [Line Items]
Voting equity interest acquired		100.00%
Business combination, consideration transferred		$ 96,400
Cash acquired		800
Fair value of replacement equity awards		500
Fair Value		13,500
Net tangible liabilities acquired		600
Goodwill		$ 84,000
Acquisition related costs				$ 3,200
Flow Security \| Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life		72 months
Bionic
Acquired Finite-Lived Intangible Assets [Line Items]
Voting equity interest acquired			100.00%
Business combination, consideration transferred			$ 239,000
Cash acquired			25,700
Fair value of replacement equity awards			700
Fair Value			34,900
Net tangible liabilities acquired			2,700
Goodwill			207,500
Bionic \| Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value			$ 29,900
Weighted average useful life			72 months