XML 64 R50.htm IDEA: XBRL DOCUMENT
v3.24.0.1

NuScale Reverse Recapitalization (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Class of Warrant or Right [Line Items] |  |  |  |
Proceeds from NuScale de-SPAC transaction | $ 341 | $ 0 | $ 341 | $ 0
SMR Warrants |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Warrants assumed | $ 48 |  |  |

X
- Definition Proceeds From de-SPAC Transaction + References No definition available. + Details
Name: | flr_ProceedsFromDeSPACTransaction
Namespace Prefix: | flr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
Name: | us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=flr_SMRWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |