QUARTERLY FINANCIAL DATA (UNAUDITED) Unaudited Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 27, 2019	Jun. 28, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 28, 2018	Jun. 29, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 5,484,490	$ 6,461,387	$ 6,088,054	$ 6,175,939	$ 6,226,124	$ 6,922,827	$ 6,662,604	$ 6,398,956	$ 24,209,870	$ 26,210,511	$ 25,441,131
Gross profit	365,627	430,477	189,093	352,759	380,295	357,325	402,301	377,854	1,337,956	1,517,775	1,595,882
Net income (loss)	$ 48,259	$ 111,388	$ (116,940)	$ 44,872	$ (64,352)	$ (45,169)	$ 86,885	$ 116,035	$ 87,579	$ 93,399	$ 420,961
Net income:
Basic (in dollars per share)	$ 0.10	$ 0.22	$ (0.23)	$ 0.09	$ (0.12)	$ (0.09)	$ 0.16	$ 0.22	$ 0.17	$ 0.18	$ 0.81
Diluted (in dollars per share)	$ 0.10	$ 0.22	$ (0.23)	$ 0.09	$ (0.12)	$ (0.09)	$ 0.16	$ 0.22	$ 0.17	$ 0.18	$ 0.80
Restructuring charges			$ 128,300	$ 56,200		$ 65,800			$ 216,407	$ 113,313	$ 90,691
Inventory impairment and other	$ 74,800				$ 84,000	70,000			84,000
Gain on sale								$ 91,800	$ 0	0	(38,689)
Cost of sales
Net income:
Restructuring charges			114,000	47,400		60,400				$ 99,000	$ 66,800
Selling, general and administrative expenses
Net income:
Restructuring charges			$ 14,400	$ 8,800		$ 5,400