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NATURE OF BUSINESS	12 Months Ended
NATURE OF BUSINESS	Mar. 31, 2015
Accounting Policies [Abstract]
NATURE OF BUSINESS	NATURE OF BUSINESS NetScout Systems, Inc., or NetScout or the Company, is an industry leader for advanced network, application and service assurance solutions, providing high-quality performance analytics that help enterprise, government and service provider customers proactively manage service delivery and identify emerging performance problems. Our offerings help customers around the world quickly resolve technology issues that cause business disruptions or negatively impact the user experience. We design, develop, manufacture, market, license, sell and support these products in integrated hardware and software solutions that are used by commercial enterprises, large governmental agencies and telecommunication service providers in some of the world’s largest, most demanding and complex internet protocol (IP) based service delivery environments. NetScout has a single operating segment and substantially all of its identifiable assets are located in the United States.