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COVER PAGE - USD ($)	3 Months Ended	12 Months Ended
COVER PAGE - USD ($)	Mar. 28, 2020	Mar. 28, 2020	May 28, 2020	Sep. 27, 2019
Cover [Abstract]
Document Type		10-K
Document Annual Report		true
Document Period End Date		Mar. 28, 2020
Document Transition Report		false
Entity File Number		1-12696
Entity Registrant Name		Plantronics, Inc.
Entity Incorporation, State or Country Code		DE
Entity Tax Identification Number		77-0207692
Entity Address, Address Line One		345 Encinal Street
Entity Address, City or Town		Santa Cruz
Entity Address, State or Province		CA
Entity Address, Postal Zip Code		95060
City Area Code		831
Local Phone Number		426-5858
Title of 12(b) Security		COMMON STOCK, $0.01 PAR VALUE
Trading Symbol		PLT
Security Exchange Name		NYSE
Entity Well-known Seasoned Issuer		Yes
Entity Voluntary Filers		No
Entity Current Reporting Status		Yes
Entity Interactive Data Current		Yes
Entity Filer Category		Large Accelerated Filer
Entity Small Business		false
Entity Emerging Growth Company		false
Entity Shell Company		false
Entity Public Float				$ 1,494,433,881
Entity Common Stock, Shares Outstanding			40,683,561
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant's Proxy Statement for its 2020 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K. Such proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended March 28, 2020.
Current Fiscal Year End Date		--03-28
Document Fiscal Year Focus		2020
Document Fiscal Period Focus		FY
Amendment Flag		false
Entity Central Index Key		0000914025