SUBSEQUENT EVENT (Details) - Revolving Credit Facility - USD ($)	Apr. 24, 2023	Feb. 16, 2021
Line of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity		$ 1,000,000,000
Debt instrument, term		3 years
Subsequent Event \| Line of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 1,250,000,000
Debt instrument, term	5 years
Subsequent Event \| Letter of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 250,000,000
Subsequent Event \| Letter of Credit \| Five-Year Senior Secured Performance Letters of Credit
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 500,000,000
Debt instrument, term	5 years
Maximum available commitments under accordion feature	$ 1,000,000,000

Line Of Credit, Accordion Feature, Maximum Borrowing Capacity

No definition available.

Name:	fti_LineOfCreditAccordionFeatureMaximumBorrowingCapacity
Namespace Prefix:	fti_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=fti_FiveYearSeniorSecuredPerformanceLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: