REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 6,710,604	$ 6,270,420	$ 13,134,560	$ 12,278,692
Point in time
Disaggregation of Revenue [Line Items]
Net sales	4,705,197		9,568,420
Over time
Disaggregation of Revenue [Line Items]
Net sales	2,005,407		3,566,140
HRS
Disaggregation of Revenue [Line Items]
Net sales	1,207,971		2,423,396
HRS | Point in time
Disaggregation of Revenue [Line Items]
Net sales	893,141		1,898,321
HRS | Over time
Disaggregation of Revenue [Line Items]
Net sales	314,830		525,075
CTG
Disaggregation of Revenue [Line Items]
Net sales	1,795,883		3,603,817
CTG | Point in time
Disaggregation of Revenue [Line Items]
Net sales	1,203,696		2,504,333
CTG | Over time
Disaggregation of Revenue [Line Items]
Net sales	592,187		1,099,484
IEI
Disaggregation of Revenue [Line Items]
Net sales	1,565,953		3,012,264
IEI | Point in time
Disaggregation of Revenue [Line Items]
Net sales	1,089,319		2,153,218
IEI | Over time
Disaggregation of Revenue [Line Items]
Net sales	476,634		859,046
CEC
Disaggregation of Revenue [Line Items]
Net sales	2,140,797		4,095,083
CEC | Point in time
Disaggregation of Revenue [Line Items]
Net sales	1,519,041		3,012,548
CEC | Over time
Disaggregation of Revenue [Line Items]
Net sales	$ 621,756		$ 1,082,535