SEGMENT REPORTING (Details) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 29, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 29, 2023 USD ($) segment	Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			3
Number of reporting segments | segment			3
Net sales	$ 7,471	$ 7,766	$ 14,807	$ 15,113
Operating income	376	325	667	597
Intangible amortization	17	21	37	43
Stock-based compensation	45	27	86	53
Restructuring charges	3		26
Interest, net	35	47	76	96
Other charges (income), net	16	6	27	(3)
Income before income taxes	325	272	564	504
Operating Segments
Segment Reporting Information [Line Items]
Net sales	7,471	7,766	14,807	15,113
Operating income	439	375	816	706
Operating Segments | Flex Agility Solutions
Segment Reporting Information [Line Items]
Net sales	3,618	4,004	7,219	7,995
Operating income	168	170	314	342
Operating Segments | Flex Reliability Solutions
Segment Reporting Information [Line Items]
Net sales	3,314	3,299	6,605	6,268
Operating income	171	175	336	322
Operating Segments | Nextracker
Segment Reporting Information [Line Items]
Net sales	573	473	1,053	868
Operating income	112	43	194	73
Intersegment eliminations
Segment Reporting Information [Line Items]
Net sales	(34)	(10)	(70)	(18)
Corporate and Other
Segment Reporting Information [Line Items]
Operating income	(12)	(13)	(28)	(31)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Intangible amortization	17	21	37	43
Stock-based compensation	45	27	86	53
Restructuring charges	1	0	24	0
Legal and other	0	2	2	13
Interest, net	35	47	76	96
Other charges (income), net	$ 16	$ 6	$ 27	$ (3)