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Discontinued Operations - Financial Information of Discontinued Operations (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Net earnings (loss) from Disc Ops |  | $ (5,872) | $ (2,071) | $ (139,110) | $ (299,021)
Net earnings (loss) from Disc Ops attributable to Fluor |  | (6,261) | (2,177) | (140,090) | (299,814)
Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Revenue |  | 399,631 | 404,509 | 1,285,184 | 1,292,625
Cost of revenue |  | 389,661 | 402,279 | 1,255,221 | 1,290,636
Gross Profit |  | 9,970 | 2,230 | 29,963 | 1,989
G&A |  | (6,046) | (16) | (8,552) | (79)
Impairment expense |  | (4,809) | 0 | (126,285) | (295,239)
Loss on sale of AMECO North America |  |  |  | (24,864) | 0
Foreign currency gain (loss) |  | (1,041) | (791) | 40 | (2,099)
Operating profit (loss) |  | (1,926) | 1,423 | (129,698) | (295,428)
Interest (expense) income, net |  | (1,332) | (1,487) | (3,738) | (4,468)
Earnings (loss) before taxes from Disc Ops |  | (3,258) | (64) | (133,436) | (299,896)
Income tax expense (benefit) |  | 2,614 | 2,007 | 5,674 | (875)
Net earnings (loss) from Disc Ops |  | (5,872) | (2,071) | (139,110) | (299,021)
Less: Net earnings (loss) from Disc Ops attributable to NCI |  | 389 | 106 | 980 | 793
Net earnings (loss) from Disc Ops attributable to Fluor |  | (6,261) | (2,177) | (140,090) | (299,814)
Discontinued Operations | Stork |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Revenue |  | 376,668 | 346,702 | 1,184,694 | 1,122,540
Cost of revenue |  | 366,640 | 345,984 | 1,154,204 | 1,130,485
Gross Profit |  | 10,028 | 718 | 30,490 | (7,945)
G&A |  | (1,246) | 0 | (3,752) | 0
Impairment expense |  | 0 | 0 | (73,200) | (195,239)
Loss on sale of AMECO North America |  |  |  | 0 | 0
Foreign currency gain (loss) |  | (387) | (678) | (384) | (1,684)
Operating profit (loss) |  | 8,395 | 40 | (46,846) | (204,868)
Interest (expense) income, net |  | (1,159) | (1,473) | (3,768) | (4,494)
Earnings (loss) before taxes from Disc Ops |  | 7,236 | (1,433) | (50,614) | (209,362)
Income tax expense (benefit) |  | 1,491 | 287 | 5,674 | (4,537)
Net earnings (loss) from Disc Ops |  | 5,745 | (1,720) | (56,288) | (204,825)
Less: Net earnings (loss) from Disc Ops attributable to NCI |  | 390 | 106 | 981 | 793
Net earnings (loss) from Disc Ops attributable to Fluor |  | 5,355 | (1,826) | (57,269) | (205,618)
Discontinued Operations | AMECO |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Revenue |  | 22,963 | 57,807 | 100,490 | 170,085
Cost of revenue |  | 21,453 | 54,240 | 96,573 | 148,727
Gross Profit |  | 1,510 | 3,567 | 3,917 | 21,358
G&A |  | (4,800) | (13) | (4,800) | (64)
Impairment expense |  | (4,809) | 0 | (53,085) | (100,000)
Loss on sale of AMECO North America | $ (25,000) |  |  | (24,864) | 0
Foreign currency gain (loss) |  | (654) | (113) | 424 | (415)
Operating profit (loss) |  | (8,753) | 3,441 | (78,408) | (79,121)
Interest (expense) income, net |  | (173) | (14) | 30 | 26
Earnings (loss) before taxes from Disc Ops |  | (8,926) | 3,427 | (78,378) | (79,095)
Income tax expense (benefit) |  | 1,123 | 1,720 | 0 | 3,662
Net earnings (loss) from Disc Ops |  | (10,049) | 1,707 | (78,378) | (82,757)
Less: Net earnings (loss) from Disc Ops attributable to NCI |  | (1) | 0 | (1) | 0
Net earnings (loss) from Disc Ops attributable to Fluor |  | (10,048) | 1,707 | (78,377) | (82,757)
Discontinued Operations | Other |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Revenue |  | 0 | 0 | 0 | 0
Cost of revenue |  | 1,568 | 2,055 | 4,444 | 11,424
Gross Profit |  | (1,568) | (2,055) | (4,444) | (11,424)
G&A |  | 0 | (3) | 0 | (15)
Impairment expense |  | 0 | 0 | 0 | 0
Loss on sale of AMECO North America |  |  |  | 0 | 0
Foreign currency gain (loss) |  | 0 | 0 | 0 | 0
Operating profit (loss) |  | (1,568) | (2,058) | (4,444) | (11,439)
Interest (expense) income, net |  | 0 | 0 | 0 | 0
Earnings (loss) before taxes from Disc Ops |  | (1,568) | (2,058) | (4,444) | (11,439)
Income tax expense (benefit) |  | 0 | 0 | 0 | 0
Net earnings (loss) from Disc Ops |  | (1,568) | (2,058) | (4,444) | (11,439)
Less: Net earnings (loss) from Disc Ops attributable to NCI |  | 0 | 0 | 0 | 0
Net earnings (loss) from Disc Ops attributable to Fluor |  | $ (1,568) | $ (2,058) | $ (4,444) | $ (11,439)

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- Definition Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721525-107759 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109222160&loc=d3e1012-107759 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721523-107759 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32672-109319 + Details
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