ORGANIZATION OF THE COMPANY AND BASIS OF PRESENTATION - Condensed Consolidates Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 6,710,604	$ 6,270,420	$ 13,134,560	$ 12,278,692
Cost of sales	6,308,303	5,877,095	12,354,405	11,478,435
Gross profit	402,301	393,325	780,155	800,257
Net income	86,885	205,086	202,920	329,796
Selling, general and administrative expenses	227,683	$ 274,149	490,565	$ 524,960
Balance without ASC 606 Adoption
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	6,595,071		13,107,323
Cost of sales	6,196,386		12,327,832
Gross profit	398,685		779,491
Net income	83,269		202,256
Accounting Standards Update 2014-09 | Adjustments
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	(115,533)		(27,237)
Cost of sales	(111,917)		(26,573)
Gross profit	(3,616)		(664)
Net income	$ (3,616)		$ (664)