EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Sep. 29, 2023	Sep. 30, 2022
Basic earnings per share attributable to the shareholders of Flex Ltd.
Net income	$ 406	$ 238	$ 617	$ 433
Net income attributable to noncontrolling interest and redeemable noncontrolling interest	178	6	203	12
Net income attributable to Flex Ltd.	$ 228	$ 232	$ 414	$ 421
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	443.0	455.0	445.0	457.0
Basic earnings per share (in dollars per share)	$ 0.51	$ 0.51	$ 0.93	$ 0.92
Diluted earnings per share attributable to the shareholders of Flex Ltd.
Net income	$ 406	$ 238	$ 617	$ 433
Net income attributable to noncontrolling interest and redeemable noncontrolling interest	178	6	203	12
Net income attributable to Flex Ltd.	$ 228	$ 232	$ 414	$ 421
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	443.0	455.0	445.0	457.0
Weighted-average ordinary share equivalents from RSU awards (in shares)	5.0	5.0	7.0	7.0
Weighted-average ordinary shares and ordinary share equivalents outstanding (in shares)	448.0	460.0	452.0	464.0
Diluted earnings per share (in dollars per share)	$ 0.51	$ 0.50	$ 0.92	$ 0.91
Restricted Stock Units
Shares used in computation:
Restricted share unit awards excluded from computation of diluted earnings per share due to their anti-dilutive impact (in shares)	0.0	0.0	2.1	3.4