RESTRUCTURING CHARGES - Provisions, Respective Payments and Remaining Accrued Balance (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 27, 2019	Jun. 28, 2019	Dec. 31, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Summarizes the provisions, respective payments, and remaining accrued balance
Balance at the beginning of the period		$ 32,434		$ 32,434	$ 61,344	$ 23,501
Provision for charges incurred	$ 128,300	56,200	$ 65,800	216,407	113,313	90,691
Balance at the end of the period				23,402	32,434	61,344
Less: Current portion (classified as other current liabilities)				23,402
Accrued restructuring costs, net of current portion (classified as other liabilities)				0
Severance
Summarizes the provisions, respective payments, and remaining accrued balance
Balance at the beginning of the period		23,234		23,234	48,006	16,359
Provision for charges incurred				123,341	38,634	69,439
Balance at the end of the period				19,502	23,234	48,006
Less: Current portion (classified as other current liabilities)				19,502
Accrued restructuring costs, net of current portion (classified as other liabilities)				0
Long-Lived Asset Impairment
Summarizes the provisions, respective payments, and remaining accrued balance
Balance at the beginning of the period		0		0	0	0
Provision for charges incurred				45,623	46,365	9,417
Balance at the end of the period				0	0	0
Less: Current portion (classified as other current liabilities)				0
Accrued restructuring costs, net of current portion (classified as other liabilities)				0
Other Exit Costs
Summarizes the provisions, respective payments, and remaining accrued balance
Balance at the beginning of the period		$ 9,200		9,200	13,338	7,142
Provision for charges incurred				47,443	28,314	11,835
Balance at the end of the period				3,900	9,200	13,338
Less: Current portion (classified as other current liabilities)				3,900
Accrued restructuring costs, net of current portion (classified as other liabilities)				0
Cash Charges
Summarizes the provisions, respective payments, and remaining accrued balance
Provision for charges incurred						78,600
Cash payments for charges incurred				(147,110)	(24,113)	(24,555)
Cash Charges | Fiscal Year 2017 and Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred						(16,908)
Cash Charges | Fiscal Year 2018 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred					(44,916)
Cash Charges | Fiscal Year 2019 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				(17,410)
Cash Charges | Severance
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				(112,463)	(22,783)	(24,555)
Cash Charges | Severance | Fiscal Year 2017 and Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred						(13,237)
Cash Charges | Severance | Fiscal Year 2018 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred					(40,623)
Cash Charges | Severance | Fiscal Year 2019 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				(14,610)
Cash Charges | Long-Lived Asset Impairment
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				0	0	0
Cash Charges | Long-Lived Asset Impairment | Fiscal Year 2017 and Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred						0
Cash Charges | Long-Lived Asset Impairment | Fiscal Year 2018 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred					0
Cash Charges | Long-Lived Asset Impairment | Fiscal Year 2019 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				0
Cash Charges | Other Exit Costs
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				(34,647)	(1,330)	0
Cash Charges | Other Exit Costs | Fiscal Year 2017 and Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred						(3,671)
Cash Charges | Other Exit Costs | Fiscal Year 2018 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred					(4,293)
Cash Charges | Other Exit Costs | Fiscal Year 2019 And Prior
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				(2,800)
Non-Cash Charges
Summarizes the provisions, respective payments, and remaining accrued balance
Provision for charges incurred				57,100		12,100
Cash payments for charges incurred				(60,919)	(73,194)	(11,385)
Non-Cash Charges | Severance
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				0	0	0
Non-Cash Charges | Long-Lived Asset Impairment
Summarizes the provisions, respective payments, and remaining accrued balance
Provision for charges incurred					66,000
Cash payments for charges incurred				(45,623)	(46,365)	(9,417)
Non-Cash Charges | Other Exit Costs
Summarizes the provisions, respective payments, and remaining accrued balance
Cash payments for charges incurred				$ (15,296)	$ (26,829)	$ (1,968)