SEGMENT REPORTING - Geographic Information of Net Sales (Countries Accounting for More Than 10% of Net Sales) (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
Segment reporting information
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
Operating segments
Segment reporting information
Net sales									26,210,511	25,441,131	23,862,934
China | Operating segments
Segment reporting information
Net sales									6,648,549	7,449,591	7,213,614
MEXICO | Operating segments
Segment reporting information
Net sales									4,538,720	4,361,814	4,075,616
UNITED STATES | Operating segments
Segment reporting information
Net sales									3,106,222	2,860,242	2,560,300
Brazil | Operating segments
Segment reporting information
Net sales									2,181,025	2,578,466	1,907,591
MALAYSIA | Operating segments
Segment reporting information
Net sales									$ 1,996,152	$ 2,005,119	$ 2,267,478
Net sales | China | Operating segments
Segment reporting information
Concentration risk percentage									25.00%	29.00%	30.00%
Net sales | MEXICO | Operating segments
Segment reporting information
Concentration risk percentage									17.00%	17.00%	17.00%
Net sales | UNITED STATES | Operating segments
Segment reporting information
Concentration risk percentage									12.00%	11.00%	11.00%
Net sales | Brazil | Operating segments
Segment reporting information
Concentration risk percentage									8.00%	10.00%	8.00%
Net sales | MALAYSIA | Operating segments
Segment reporting information
Concentration risk percentage									8.00%	8.00%	10.00%