CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	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
Beginning balance (in shares) at Mar. 31, 2019			517,000,000
Beginning balance at Mar. 31, 2019	$ 2,972,000	$ 22,000	$ 6,136,000	$ (3,012,000)	$ 22,000	$ (42,000)	$ (110,000)	$ (152,000)
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 (loss)	(72,000)			(72,000)
Stock-based compensation	34,000		$ 34,000
Total other comprehensive income (loss)	(38,000)					(17,000)	(21,000)	(38,000)
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(11,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(112,000)		$ (112,000)
Ending balance (in shares) at Sep. 27, 2019			509,000,000
Ending balance at Sep. 27, 2019	2,806,000		$ 6,058,000	(3,062,000)		(59,000)	(131,000)	(190,000)
Beginning balance (in shares) at Jun. 28, 2019			514,000,000
Beginning balance at Jun. 28, 2019	3,002,000		$ 6,099,000	(2,945,000)		(47,000)	(105,000)	(152,000)
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 (loss)	(117,000)			(117,000)
Stock-based compensation	19,000		$ 19,000
Total other comprehensive income (loss)	(38,000)					(12,000)	(26,000)	(38,000)
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(6,000,000)
Repurchase of Flex Ltd. ordinary shares at cost	(60,000)		$ (60,000)
Ending balance (in shares) at Sep. 27, 2019			509,000,000
Ending balance at Sep. 27, 2019	$ 2,806,000		$ 6,058,000	(3,062,000)		(59,000)	(131,000)	(190,000)
Beginning balance (in shares) at Mar. 31, 2020	497,426,277		497,000,000
Beginning balance at Mar. 31, 2020	$ 2,831,000		$ 5,948,000	(2,902,000)		(82,000)	(133,000)	(215,000)
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 (loss)	165,000			165,000
Stock-based compensation	37,000		$ 37,000
Total other comprehensive income (loss)	$ 82,000					37,000	45,000	82,000
Ending balance (in shares) at Sep. 25, 2020	501,094,898		501,000,000
Ending balance at Sep. 25, 2020	$ 3,115,000		$ 5,985,000	(2,737,000)		(45,000)	(88,000)	(133,000)
Beginning balance (in shares) at Jun. 26, 2020			500,000,000
Beginning balance at Jun. 26, 2020	2,940,000		$ 5,961,000	(2,850,000)		(52,000)	(119,000)	(171,000)
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 (loss)	113,000			113,000
Stock-based compensation	24,000		$ 24,000
Total other comprehensive income (loss)	$ 38,000					7,000	31,000	38,000
Ending balance (in shares) at Sep. 25, 2020	501,094,898		501,000,000
Ending balance at Sep. 25, 2020	$ 3,115,000		$ 5,985,000	$ (2,737,000)		$ (45,000)	$ (88,000)	$ (133,000)