CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Ordinary Shares	Accumulated Deficit	Unrealized Gain (Loss) on Derivative Instruments and Other	Foreign Currency Translation Adjustments	Total Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Mar. 31, 2020		497,000,000
Beginning balance at Mar. 31, 2020	$ 2,831	$ 5,948	$ (2,902)	$ (82)	$ (133)	$ (215)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)		3,000,000
Net income	52		52
Stock-based compensation	13	$ 13
Total other comprehensive income (loss)	44			30	14	44
Ending balance (in shares) at Jun. 26, 2020		500,000,000
Ending balance at Jun. 26, 2020	$ 2,940	$ 5,961	(2,850)	(52)	(119)	(171)
Beginning balance (in shares) at Mar. 31, 2021	492,567,845	492,000,000
Beginning balance at Mar. 31, 2021	$ 3,436	$ 5,844	(2,289)	(42)	(77)	(119)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Flex Ltd. ordinary shares at cost (in shares)		(9,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(162)	$ (162)
Exercise of stock options (in shares)		1,000,000
Exercise of stock options	0
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)		5,000,000
Net income	206		206
Stock-based compensation	20	$ 20
Total other comprehensive income (loss)	$ 8			3	5	8
Ending balance (in shares) at Jul. 02, 2021	489,109,044	489,000,000
Ending balance at Jul. 02, 2021	$ 3,508	$ 5,702	$ (2,083)	$ (39)	$ (72)	$ (111)