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			516,548,000
Beginning balance at Mar. 31, 2019	$ 2,972,360	$ 22,023	$ 6,135,535	$ (3,012,012)	$ 22,023	$ (41,556)	$ (109,607)	$ (151,163)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			117,000
Exercise of stock options	403		$ 403
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)			2,399,000
Net income	44,872			44,872
Stock-based compensation, net of tax	15,227		$ 15,227
Total other comprehensive income (loss)	(1,071)					(5,475)	4,404	(1,071)
Repurchase of Flex Ltd. ordinary shares at cost (in shares)			(5,025,000)
Repurchase of Flex Ltd. ordinary shares at cost	(51,999)		$ (51,999)
Ending balance (in shares) at Jun. 28, 2019			514,039,000
Ending balance at Jun. 28, 2019	$ 3,001,815		$ 6,099,166	(2,945,117)		(47,031)	(105,203)	(152,234)
Beginning balance (in shares) at Mar. 31, 2020	497,426,277		497,426,000
Beginning balance at Mar. 31, 2020	$ 2,831,153		$ 5,948,230	(2,902,410)		(81,663)	(133,004)	(214,667)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			89,000
Exercise of stock options	53		$ 53
Issuance of Flex Ltd. vested shares under restricted share unit awards (in shares)			2,831,000
Net income	51,820			51,820
Stock-based compensation, net of tax	12,769		$ 12,769
Total other comprehensive income (loss)	$ 43,810					29,760	14,050	43,810
Ending balance (in shares) at Jun. 26, 2020	500,346,215		500,346,000
Ending balance at Jun. 26, 2020	$ 2,939,605		$ 5,961,052	$ (2,850,590)		$ (51,903)	$ (118,954)	$ (170,857)