BUSINESS COMBINATIONS AND DIVESTITURES - Conversocial Limited (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 23, 2021	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Business Acquisition
Cash paid for business combinations, including adjustments, net of cash acquired	$ 50,200	$ 57,024	$ 0	$ 55,403
Goodwill		$ 1,353,421	$ 1,327,407	$ 1,311,068
Finite-lived intangible asset, useful life (in years)		10 years
Conversocial Limited
Business Acquisition
Cash	53,409
Cash acquired from acquisition	3,200
Other purchase price adjustments	(190)
Goodwill	31,574
Business acquisition, goodwill deductible for income tax purposes	500
Business acquisition, goodwill not deductible for income tax purposes	31,100
Current and long-term contract liabilities	3,410
Component of the purchase price allocation	$ 1,200
Business acquisition related costs		$ 3,400
Weighted-average estimated useful life of all finite-lived identifiable intangible assets (in years)	5 years 10 months 24 days
Conversocial Limited | Customer relationships
Business Acquisition
Finite-lived intangible asset, useful life (in years)	7 years
Conversocial Limited | Developed technology
Business Acquisition
Finite-lived intangible asset, useful life (in years)	5 years
Conversocial Limited | Trademarks and trade names
Business Acquisition
Finite-lived intangible asset, useful life (in years)	1 year
Conversocial Limited | Prepaid expenses and other current assets
Business Acquisition
Component of the purchase price allocation	$ 700
Conversocial Limited | Other Assets
Business Acquisition
Component of the purchase price allocation	$ 500