EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Sep. 30, 2022	Oct. 01, 2021
Basic earnings per share attributable to the shareholders of Flex Ltd.
Net income	$ 238	$ 336	$ 433	$ 542
Net income attributable to redeemable noncontrolling interest	6	0	12	0
Net income attributable to Flex Ltd.	$ 232	$ 336	$ 421	$ 542
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	455.0	482.0	457.0	487.0
Basic earnings (losses) per share (in dollars per share)	$ 0.51	$ 0.70	$ 0.92	$ 1.11
Diluted earnings per share attributable to the shareholders of Flex Ltd.
Net income	$ 238	$ 336	$ 433	$ 542
Net income attributable to redeemable noncontrolling interest	6	0	12	0
Net income attributable to Flex Ltd.	$ 232	$ 336	$ 421	$ 542
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	455.0	482.0	457.0	487.0
Weighted-average ordinary share equivalents from RSU awards (in shares)	5.0	5.0	7.0	6.0
Weighted-average ordinary shares and ordinary share equivalents outstanding (in shares)	460.0	487.0	464.0	493.0
Diluted earnings per share (in dollars per share)	$ 0.50	$ 0.69	$ 0.91	$ 1.10
Restricted Stock Units
Shares used in computation:
Immaterial RSU awards	0.0	0.0	3.4	0.0