RESTRUCTURING CHARGES - Summary of Restructuring Charges (Details) - USD ($) $ in Thousands	9 Months Ended
Dec. 31, 2018
RESTRUCTURING CHARGES
Balance as of March 31, 2018	$ 61,344
Provision for charges incurred during the nine-month period ended December 31, 2018	100,433
Balance as of December 31, 2018	34,924
Less: Current portion (classified as other current liabilities)	34,924
Accrued restructuring costs, net of current portion (classified as other liabilities)	0
Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	(12,921)
Cash Charges \| Fiscal Year 2018 and Prior
RESTRUCTURING CHARGES
Payments for charges incurred	(41,285)
Non-Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	(72,647)
Severance
RESTRUCTURING CHARGES
Balance as of March 31, 2018	48,006
Provision for charges incurred during the nine-month period ended December 31, 2018	25,407
Balance as of December 31, 2018	22,562
Less: Current portion (classified as other current liabilities)	22,562
Accrued restructuring costs, net of current portion (classified as other liabilities)	0
Severance \| Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	(12,921)
Severance \| Cash Charges \| Fiscal Year 2018 and Prior
RESTRUCTURING CHARGES
Payments for charges incurred	(37,930)
Severance \| Non-Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	0
Long-Lived Asset Impairment
RESTRUCTURING CHARGES
Balance as of March 31, 2018	0
Provision for charges incurred during the nine-month period ended December 31, 2018	46,365
Balance as of December 31, 2018	0
Less: Current portion (classified as other current liabilities)	0
Accrued restructuring costs, net of current portion (classified as other liabilities)	0
Long-Lived Asset Impairment \| Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	0
Long-Lived Asset Impairment \| Cash Charges \| Fiscal Year 2018 and Prior
RESTRUCTURING CHARGES
Payments for charges incurred	0
Long-Lived Asset Impairment \| Non-Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	(46,365)
Other Exit Costs
RESTRUCTURING CHARGES
Balance as of March 31, 2018	13,338
Provision for charges incurred during the nine-month period ended December 31, 2018	28,661
Balance as of December 31, 2018	12,362
Less: Current portion (classified as other current liabilities)	12,362
Accrued restructuring costs, net of current portion (classified as other liabilities)	0
Other Exit Costs \| Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	0
Other Exit Costs \| Cash Charges \| Fiscal Year 2018 and Prior
RESTRUCTURING CHARGES
Payments for charges incurred	(3,355)
Other Exit Costs \| Non-Cash Charges
RESTRUCTURING CHARGES
Payments for charges incurred	$ (26,282)

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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