SEGMENT REPORTING (Details) $ in Millions	3 Months Ended	6 Months Ended
Sep. 30, 2022 USD ($)	Oct. 01, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Oct. 01, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment			3
Number of reporting segments \| segment			3
Net sales	$ 7,766	$ 6,229	$ 15,113	$ 12,571
Operating income	325	237	597	493
Intangible amortization	21	15	43	30
Stock-based compensation	27	24	53	44
Operating Segments
Segment Reporting Information [Line Items]
Net sales	7,766	6,229	15,113	12,571
Operating Segments \| Flex Agility Solutions
Segment Reporting Information [Line Items]
Net sales	4,004	3,437	7,995	6,869
Operating income	170	153	342	290
Operating Segments \| Flex Reliability Solutions
Segment Reporting Information [Line Items]
Net sales	3,299	2,465	6,268	5,047
Operating income	175	126	322	271
Operating Segments \| Nextracker
Segment Reporting Information [Line Items]
Net sales	473	339	868	680
Operating income	43	25	73	50
Intersegment eliminations
Segment Reporting Information [Line Items]
Net sales	(10)	(12)	(18)	(25)
Corporate and Other
Segment Reporting Information [Line Items]
Operating income	(13)	(18)	(31)	(35)
Total segment income
Segment Reporting Information [Line Items]
Operating income	375	286	706	576
Segment Reconciling Items
Segment Reporting Information [Line Items]
Intangible amortization	21	15	43	30
Stock-based compensation	27	24	53	44
Restructuring charges	0	9	0	9
Legal and other	$ 2	$ 1	$ 12	$ 0

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