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THE COMPANY	12 Months Ended
THE COMPANY	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company	THE COMPANY Plantronics, Inc. (“Plantronics” or “the Company”) is a leading worldwide designer, manufacturer, and marketer of lightweight communications headsets, telephone headset systems, and accessories for the business and consumer markets under the Plantronics brand. The Company operates its business as one segment. Founded in 1961, Plantronics is incorporated in the state of Delaware and trades on the New York Stock Exchange under the ticker symbol “PLT”.