BALANCE SHEET ITEMS - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023
Balance Sheet Related Disclosures [Abstract]
Customer working capital advances	$ 2,200	$ 2,300
Other accrued liabilities current	$ 272	$ 313

Other Liabilities, Customer-Related Accruals, Current

No definition available.

Name:	flex_OtherLiabilitiesCustomerRelatedAccrualsCurrent
Namespace Prefix:	flex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant