Cover Page - shares	9 Months Ended
	Dec. 31, 2019	Jan. 24, 2020
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	0-23354
Entity Registrant Name	FLEX LTD.
Entity Incorporation, State or Country Code	U0
Entity Address, Address Line One	2 Changi South Lane,
Entity Address, State or Province	SG
Entity Address, Postal Zip Code	486123
City Area Code	65
Local Phone Number	6876-9899
Title of 12(b) Security	Ordinary Shares, No Par Value
Trading Symbol	FLEX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		503,991,662
Entity Central Index Key	0000866374
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Address, City or Town	Singapore
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3