SUMMARY OF ACCOUNTING POLICIES - Condensed Consolidated Statement of Operations (Details) - USD ($) $ 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
Revenue, Initial Application Period Cumulative Effect Transition [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
Cost of sales (including restructuring charges)									24,692,736
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
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales		$ 22,000	$ 48,000	$ 25,000
Adjustment | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									(25,665)
Cost of sales (including restructuring charges)									(28,406)
Gross profit									2,741
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									26,184,846
Cost of sales (including restructuring charges)									24,664,330
Gross profit									$ 1,520,516