CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Ordinary Shares	Accumulated Deficit	Unrealized 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)		4,000,000
Net income	165		165
Stock-based compensation	37	$ 37
Total other comprehensive income (loss)	82			37	45	82
Ending balance (in shares) at Sep. 25, 2020		501,000,000
Ending balance at Sep. 25, 2020	3,115	$ 5,985	(2,737)	(45)	(88)	(133)
Beginning balance (in shares) at Jun. 26, 2020		500,000,000
Beginning balance at Jun. 26, 2020	2,940	$ 5,961	(2,850)	(52)	(119)	(171)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)		1,000,000
Net income	113		113
Stock-based compensation	24	$ 24
Total other comprehensive income (loss)	38			7	31	38
Ending balance (in shares) at Sep. 25, 2020		501,000,000
Ending balance at Sep. 25, 2020	$ 3,115	$ 5,985	(2,737)	(45)	(88)	(133)
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)		(27,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(490)	$ (490)
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	542		542
Stock-based compensation	44	$ 44
Total other comprehensive income (loss)	$ (18)			(7)	(11)	(18)
Ending balance (in shares) at Oct. 01, 2021	471,474,341	471,000,000
Ending balance at Oct. 01, 2021	$ 3,514	$ 5,398	(1,747)	(49)	(88)	(137)
Beginning balance (in shares) at Jul. 02, 2021		489,000,000
Beginning balance at Jul. 02, 2021	3,508	$ 5,702	(2,083)	(39)	(72)	(111)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Flex Ltd. ordinary shares at cost (in shares)		(18,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(328)	$ (328)
Net income	336		336
Stock-based compensation	24	$ 24
Total other comprehensive income (loss)	$ (26)			(10)	(16)	(26)
Ending balance (in shares) at Oct. 01, 2021	471,474,341	471,000,000
Ending balance at Oct. 01, 2021	$ 3,514	$ 5,398	$ (1,747)	$ (49)	$ (88)	$ (137)