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v3.23.2

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

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- Definition Customer Working Capital Advances + References No definition available. + Details
Name: | flex_CustomerWorkingCapitalAdvances
Namespace Prefix: | flex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Other Liabilities, Customer-Related Accruals, Current + References No definition available. + Details
Name: | flex_OtherLiabilitiesCustomerRelatedAccrualsCurrent
Namespace Prefix: | flex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_BalanceSheetRelatedDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration