CONSOLIDATED STATEMENTS OF REDEEMABLE NONCONTROLLING INTEREST AND SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Ordinary Shares	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Unrealized Gain (Loss) on Derivative Instruments And Other	Foreign Currency Translation Adjustments	Total Accumulated Other Comprehensive Loss
Increase (Decrease) in Shareholders' Equity
Cumulative effect on opening equity of adopting accounting standards and other	$ 2,973.0	$ 22.0	$ 6,136.0	$ (3,012.0)	$ 22.0	$ (42.0)	$ (109.0)	$ (151.0)
Redeemable noncontrolling interests, beginning balance at Mar. 31, 2019	0.0
Redeemable noncontrolling interests, ending balance at Mar. 31, 2020	0.0
Beginning balance (in shares) at Mar. 31, 2019			517,000,000
Beginning balance at Mar. 31, 2019	2,973.0	$ 22.0	$ 6,136.0	(3,012.0)	$ 22.0	(42.0)	(109.0)	(151.0)
Increase (Decrease) in Shareholders' Equity
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(24,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(260.0)		$ (260.0)
Exercise of stock options (in shares)			0
Exercise of stock options	1.0		$ 1.0
Issuance of Flex Ltd. vested shares under share bonus awards (in shares)			4,000,000
Net income	88.0			88.0
Stock-based compensation	71.0		$ 71.0
Total other comprehensive income (loss)	(64.0)					(40.0)	(24.0)	(64.0)
Ending balance (in shares) at Mar. 31, 2020			497,000,000
Ending balance at Mar. 31, 2020	2,831.0		$ 5,948.0	(2,902.0)		(82.0)	(133.0)	(215.0)
Increase (Decrease) in Shareholders' Equity
Cumulative effect on opening equity of adopting accounting standards and other	2,831.0		$ 5,948.0	(2,902.0)		(82.0)	(133.0)	(215.0)
Redeemable noncontrolling interests, ending balance at Mar. 31, 2021	0.0
Increase (Decrease) in Shareholders' Equity
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(10,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(183.0)		$ (183.0)
Issuance of Flex Ltd. vested shares under share bonus awards (in shares)			5,000,000
Net income	613.0			613.0
Stock-based compensation	79.0		$ 79.0
Total other comprehensive income (loss)	$ 96.0					40.0	56.0	96.0
Ending balance (in shares) at Mar. 31, 2021	492,567,845		492,000,000
Ending balance at Mar. 31, 2021	$ 3,436.0		$ 5,844.0	(2,289.0)		(42.0)	(77.0)	(119.0)
Increase (Decrease) in Shareholders' Equity
Cumulative effect on opening equity of adopting accounting standards and other	3,436.0		5,844.0	(2,289.0)		(42.0)	(77.0)	(119.0)
Temporary equity, sale of subsidiary's redeemable preferred units, net of transaction cost	74.0
Net income	4.0
Redeemable noncontrolling interests, ending balance at Mar. 31, 2022	78.0
Increase (Decrease) in Shareholders' Equity
Sale of subsidiary's redeemable preferred units, net of transaction cost	414.0		$ 414.0
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(38,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(686.0)		$ (686.0)
Exercise of stock options (in shares)			1,000,000
Exercise of stock options	1.0		$ 1.0
Issuance of Flex Ltd. vested shares under share bonus awards (in shares)			6,000,000
Net income	936.0			936.0
Stock-based compensation	91.0		$ 91.0
Total other comprehensive income (loss)	$ (63.0)					(24.0)	(39.0)	(63.0)
Ending balance (in shares) at Mar. 31, 2022	460,560,312		461,000,000
Ending balance at Mar. 31, 2022	$ 4,129.0		$ 5,664.0	(1,353.0)		(66.0)	(116.0)	(182.0)
Increase (Decrease) in Shareholders' Equity
Cumulative effect on opening equity of adopting accounting standards and other	$ 4,129.0		$ 5,664.0	$ (1,353.0)		$ (66.0)	$ (116.0)	$ (182.0)