COVER PAGE COVER PAGE - USD ($)	12 Months Ended
	Mar. 28, 2020	Jun. 03, 2020	Sep. 27, 2019
Cover [Abstract]
Document Type	10-K/A
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	No
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	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
Entity Central Index Key	0000914025
Current Fiscal Year End Date	--03-28
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	This Amendment No. 1 on Form 10-K/A (the “Amendment”) of Plantronics, Inc. (the “Company”) amends the Company’s Annual Report on Form 10-K for the year ended March 28, 2020, originally filed with the Securities and Exchange Commission on June 8, 2020 (the “Original Report”). This Amendment is being filed solely for the purpose of inserting the conformed signature of the current Principal Accounting Officer, which was inadvertently omitted from the Original Report. This Amendment speaks as of the original filing date of the Form 10-K, does not reflect events that may have occurred subsequent to the original filing date, and does not modify or update in any way disclosures made in the Original Report. No other changes have been made to the Original Report. As required by Rule 12b-15 of the Securities Exchange Act of 1934, as amended, this Amendment contains new certifications by the Company’s principal executive officer and principal financial officer, which are being filed as exhibits to the Amendment. Because the Amendment includes no financial statements, the Company is not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.