CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE NONCONTROLLING INTEREST AND SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Total Flex Ltd. Shareholders' Equity	Ordinary Shares	Accumulated Deficit	Unrealized Gain (Loss) on Derivative Instruments and Other	Foreign Currency Translation Adjustments	Total Accumulated Other Comprehensive Loss	Noncontrolling Interest
Redeemable noncontrolling interests, beginning balance at Mar. 31, 2022	$ 78
Increase (Decrease) in Temporary Equity
Net income	19
Redeemable noncontrolling interests, ending balance at Dec. 31, 2022	97
Beginning balance (in shares) at Mar. 31, 2022			461,000,000
Beginning balance at Mar. 31, 2022	4,129	$ 4,129	$ 5,664	$ (1,353)	$ (66)	$ (116)	$ (182)	$ 0
Increase (Decrease) in Shareholders' Equity
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(17,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(293)	(293)	$ (293)
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)			8,000,000
Net income	651	651		651
Stock-based compensation	80	80	$ 80
Total other comprehensive gains (loss)	(62)	(62)			21	(83)	(62)
Ending balance (in shares) at Dec. 31, 2022			452,000,000
Ending balance at Dec. 31, 2022	4,505	4,505	$ 5,451	(702)	(45)	(199)	(244)	0
Redeemable noncontrolling interests, beginning balance at Sep. 30, 2022	90
Increase (Decrease) in Temporary Equity
Net income	7
Redeemable noncontrolling interests, ending balance at Dec. 31, 2022	97
Beginning balance (in shares) at Sep. 30, 2022			454,000,000
Beginning balance at Sep. 30, 2022	4,180	4,180	$ 5,464	(932)	(73)	(279)	(352)	0
Increase (Decrease) in Shareholders' Equity
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(2,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(40)	(40)	$ (40)
Net income	230	230		230
Stock-based compensation	27	27	$ 27
Total other comprehensive gains (loss)	108	108			28	80	108
Ending balance (in shares) at Dec. 31, 2022			452,000,000
Ending balance at Dec. 31, 2022	4,505	4,505	$ 5,451	(702)	(45)	(199)	(244)	0
Redeemable noncontrolling interests, beginning balance at Mar. 31, 2023	0
Redeemable noncontrolling interests, ending balance at Dec. 31, 2023	$ 0
Beginning balance (in shares) at Mar. 31, 2023	450,122,691		450,000,000
Beginning balance at Mar. 31, 2023	$ 5,706	5,351	$ 6,105	(560)	(14)	(180)	(194)	355
Increase (Decrease) in Shareholders' Equity
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(31,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(781)	(781)	$ (781)
Nextracker follow-on transactions and distribution	493	607	$ 607					(114)
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)			8,000,000
Net income	850	611		611				239
Stock-based compensation	125	125	$ 125
Total other comprehensive gains (loss)	$ 52	52			40	12	52
Ending balance (in shares) at Dec. 31, 2023	427,319,202		427,000,000
Ending balance at Dec. 31, 2023	$ 6,445	5,965	$ 6,056	51	26	(168)	(142)	480
Redeemable noncontrolling interests, beginning balance at Sep. 29, 2023	0
Redeemable noncontrolling interests, ending balance at Dec. 31, 2023	0
Beginning balance (in shares) at Sep. 29, 2023			438,000,000
Beginning balance at Sep. 29, 2023	6,356	5,906	$ 6,292	(146)	(13)	(227)	(240)	450
Increase (Decrease) in Shareholders' Equity
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(11,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(275)	(275)	$ (275)
Nextracker tax distribution	(6)							(6)
Net income	233	197		197				36
Stock-based compensation	39	39	$ 39
Total other comprehensive gains (loss)	$ 98	98			39	59	98
Ending balance (in shares) at Dec. 31, 2023	427,319,202		427,000,000
Ending balance at Dec. 31, 2023	$ 6,445	$ 5,965	$ 6,056	$ 51	$ 26	$ (168)	$ (142)	$ 480