RESTRUCTURING AND OTHER RELATED CHARGES (CREDITS) (Details)	9 Months Ended
Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 439
Assumed Liability	9,495
Accruals	20,711
Cash Payments	(11,222)
Adjustments	(292)
Restructuring Reserve	19,131
Severance Benefits from Reduction-In-Force [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	114
Assumed Liability	921
Accruals	15,726
Cash Payments	(8,811)
Adjustments	(216)
Restructuring Reserve	7,734
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	325
Assumed Liability	8,574
Accruals	1,932
Cash Payments	(1,420)
Adjustments	(76)
Restructuring Reserve	9,335
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	3,053
Cash Payments	(991)
Adjustments	0
Restructuring Reserve	2,062
Plantronics Legacy Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	439
Assumed Liability	9,495
Accruals	1,200
Cash Payments	(2,753)
Adjustments	(108)
Restructuring Reserve	8,273
Plantronics Legacy Plan [Member] \| Severance Benefits from Reduction-In-Force [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	114
Assumed Liability	921
Accruals	1,101
Cash Payments	(1,333)
Adjustments	(223)
Restructuring Reserve	580
Plantronics Legacy Plan [Member] \| Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	325
Assumed Liability	8,574
Accruals	99
Cash Payments	(1,420)
Adjustments	115
Restructuring Reserve	7,693
Q2 2019 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	7,420
Cash Payments	(6,171)
Adjustments	(3)
Restructuring Reserve	1,246
Q2 2019 Plan [Member] \| Severance Benefits from Reduction-In-Force [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	7,420
Cash Payments	(6,171)
Adjustments	(3)
Restructuring Reserve	1,246
Q3 2019 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	12,091
Cash Payments	(2,298)
Adjustments	(181)
Restructuring Reserve	9,612
Q3 2019 Plan [Member] \| Severance Benefits from Reduction-In-Force [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	7,205
Cash Payments	(1,307)
Adjustments	10
Restructuring Reserve	5,908
Q3 2019 Plan [Member] \| Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	1,833
Cash Payments	0
Adjustments	(191)
Restructuring Reserve	1,642
Q3 2019 Plan [Member] \| Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0
Assumed Liability	0
Accruals	3,053
Cash Payments	(991)
Adjustments	0
Restructuring Reserve	2,062
Polycom [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 7,700,000

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

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