QUARTERLY FINANCIAL DATA Unaudited Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 28, 2018	Jun. 29, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 29, 2017	Jun. 30, 2017	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 6,226,124	$ 6,922,827	$ 6,662,604	$ 6,398,956	$ 6,410,887	$ 6,751,552	$ 6,270,420	$ 6,008,272	$ 26,210,511	$ 25,441,131	$ 23,862,934
Gross profit	380,295	357,325	402,301	377,854	349,297	446,328	393,325	406,932	1,517,775	1,595,882	1,520,945
Net income (loss)	$ (64,352)	$ (45,169)	$ 86,885	$ 116,035	$ (19,595)	$ 118,333	$ 205,086	$ 124,710	$ 93,399	$ 420,961	$ 311,072
Net income (loss):
Basic (in dollars per share)	$ (0.12)	$ (0.09)	$ 0.16	$ 0.22	$ (0.04)	$ 0.22	$ 0.39	$ 0.24	$ 0.18	$ 0.81	$ 0.59
Diluted (in dollars per share)	$ (0.12)	$ (0.09)	$ 0.16	$ 0.22	$ (0.04)	$ 0.22	$ 0.38	$ 0.23	$ 0.18	$ 0.80	$ 0.59
Restructuring charges		$ 65,800			$ 82,700				$ 99,005	$ 66,845	$ 38,758
Inventory impairment and other		70,000									93,000
Gain on sale				$ 91,800					0	(38,689)	7,400
Gain on deconsolidation									86,614	151,574	0
Cost of sales
Net income (loss):
Restructuring charges		60,400			58,900				$ 99,000	$ 66,800	$ 38,800
Selling, general and administrative expenses
Net income (loss):
Restructuring charges		5,400			$ 23,800
Wink Labs Inc
Net income (loss):
Gain on sale								$ 38,700
Elementum
Net income (loss):
Inventory impairment and other	$ 84,000
Gain on deconsolidation							$ 151,600
Accounting Standards Update 2014-09
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		$ 22,000	$ 48,000	$ 25,000