EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Basic earnings per share attributable to the shareholders of Flex Ltd.
Net income	$ 237	$ 227	$ 670	$ 769
Net income attributable to redeemable noncontrolling interest	7	0	19	0
Net income attributable to Flex Ltd.	$ 230	$ 227	$ 651	$ 769
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	452	469	455	481
Basic earnings per share (in dollars per share)	$ 0.51	$ 0.48	$ 1.43	$ 1.60
Diluted earnings per share attributable to the shareholders of Flex Ltd.
Net income	$ 237	$ 227	$ 670	$ 769
Net income attributable to redeemable noncontrolling interest	7	0	19	0
Net income attributable to Flex Ltd.	$ 230	$ 227	$ 651	$ 769
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	452	469	455	481
Weighted-average ordinary share equivalents from RSU awards (in shares)	7	5	7	6
Weighted-average ordinary shares and ordinary share equivalents outstanding (in shares)	459	474	462	487
Diluted earnings per share (in dollars per share)	$ 0.50	$ 0.48	$ 1.41	$ 1.58