Represents the number of tranches of senior subordinated notes issued by the entity.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Periodic Payment, Principal, Term One

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Periodic Payment, Principal, Term Two

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=flex_TermLoanMember
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- Details

Name:	us-gaap_ExternalCreditRatingByGroupingAxis=us-gaap_ExternalCreditRatingInvestmentGradeMember
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- Details

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- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
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- Details

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- Details

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BANK BORROWINGS AND LONG TERM DEBT - Additional Information (Details) $ in Millions		3 Months Ended
	Jun. 30, 2017 USD ($) tranche	Jun. 30, 2017 USD ($)	Mar. 31, 2017
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate	3.30%	3.30%	3.50%
2022 Credit Facility
Debt Instrument [Line Items]
Periodic principal payment, up to June 30, 2020	$ 6.3
Periodic principal payment, after June 30, 2020	$ 12.6
Number of tranches \| tranche	3
Term of debt instrument	5 years
Term Loan, including current portion, due in installments through March 2019
Debt Instrument [Line Items]
Amount of debt extinguished		$ 2,100.0
Federal Funds Rate \| 2022 Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
One-Month LIBOR \| 2022 Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility \| 2022 Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	$ 1,750.0	1,750.0
Term Loan \| 2022 Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	$ 502.5	$ 502.5
External credit rating \| Federal Funds Rate \| 2022 Credit Facility \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.125%
External credit rating \| Federal Funds Rate \| 2022 Credit Facility \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
External credit rating \| One-Month LIBOR \| 2022 Credit Facility \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%
External credit rating \| One-Month LIBOR \| 2022 Credit Facility \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.875%
Tranche One \| 2022 Credit Facility
Debt Instrument [Line Items]
Debt instrument interest rate (as a percent)	4.625%	4.625%
Tranche Two \| 2022 Credit Facility
Debt Instrument [Line Items]
Debt instrument interest rate (as a percent)	5.00%	5.00%
Tranche Three \| 2022 Credit Facility
Debt Instrument [Line Items]
Debt instrument interest rate (as a percent)	4.75%	4.75%