Fluor (FLR) 10-Q 22 Oct 20 2020 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2020	Sep. 30, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	1-16129
Entity Registrant Name	FLUOR CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	33-0927079
Entity Address, Address Line One	6700 Las Colinas Boulevard
Entity Address, City or Town	Irving,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75039
City Area Code	469
Local Phone Number	398-7000
Entity Current Reporting Status	No
Entity Interactive Data Current	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		140,609,216
Entity Central Index Key	0001124198
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Common Stock | NEW YORK STOCK EXCHANGE, INC.
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $.01 par value per share
Trading Symbol	FLR
Security Exchange Name	NYSE
Preferred Stock Purchase Rights | NEW YORK STOCK EXCHANGE, INC.
Entity Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights
Trading Symbol	FLR
Security Exchange Name	NYSE

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 4,118,556	$ 4,133,612
Cost of revenue	4,057,159	4,070,859
Other (income) and expenses
Corporate general and administrative expense	(14,052)	58,621
Impairment, restructuring and other exit costs	297,604	27,368
Interest expense	18,323	18,630
Interest income	(12,052)	(12,892)
Total cost and expenses	4,346,982	4,162,586
Earnings (loss) from continuing operations before taxes	(228,426)	(28,974)
Income tax expense (benefit)	(66,831)	15,257
Net earnings (loss) from continuing operations	(161,595)	(44,231)
Net earnings (loss) from discontinued operations	(94,855)	(814)
Net earnings (loss)	(256,450)	(45,045)
Less: Net earnings (loss) attributable to NCI from continuing operations	9,509	23,859
Net earnings (loss) attributable to Fluor Corporation from continuing operations	(171,104)	(68,090)
Less: Net earnings (loss) attributable to NCI from discontinued operations	0	0
Net earnings (loss) attributable to Fluor Corporation	(265,959)	(68,904)
Amounts attributable to Fluor Corporation
Net earnings (loss) attributable to Fluor Corporation from continuing operations	(171,104)	(68,090)
Net earnings (loss) attributable to Fluor Corporation from discontinued operations	(94,855)	(814)
Net earnings (loss) attributable to Fluor Corporation	$ (265,959)	$ (68,904)
Basic earnings (loss) per share attributable to Fluor Corporation
Earnings (loss) from continuing operations (in dollars per share)	$ (1.22)	$ (0.49)
Earnings (loss) from discontinued operations, net of taxes (in dollars per share)	(0.68)	0
Net earnings (loss) (in dollars per share)	(1.90)	(0.49)
Diluted earnings (loss) per share attributable to Fluor Corporation
Earnings (loss) from continuing operations (in dollars per share)	(1.22)	(0.49)
Earnings (loss) from discontinued operations, net of taxes (in dollars per share)	(0.68)	0
Net earnings (loss) (in dollars per share)	$ (1.90)	$ (0.49)

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ (256,450)	$ (45,045)
OCI, net of tax:
Foreign currency translation adjustment	(111,101)	42,196
Ownership share of equity method investees’ OCI	(8,172)	(2,322)
Defined benefit pension and postretirement plan adjustments	1,046	2,064
Unrealized gain (loss) on derivative contracts	(5,470)	3,457
Total OCI, net of tax	(123,697)	45,395
Comprehensive income (loss)	(380,147)	350
Less: Comprehensive income (loss) attributable to NCI	5,292	24,344
Comprehensive income (loss) attributable to Fluor Corporation	$ (385,439)	$ (23,994)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents ($441,709 and $392,772 related to VIEs)	$ 1,870,874	$ 1,997,199
Marketable securities ($66 related to VIEs in both periods)	6,477	7,262
Accounts and notes receivable, net ($279,915 and $329,548 related to VIEs)	1,097,800	1,217,464
Contract assets ($282,050 and $294,116 related to VIEs)	1,310,686	1,238,173
Other current assets ($21,166 and $32,271 related to VIEs)	477,013	389,565
Current assets held for sale	366,639	559,070
Total current assets	5,129,489	5,408,733
Noncurrent assets
Property, plant and equipment, net ($28,841 and $29,492 related to VIEs)	567,148	552,856
Goodwill	306,482	508,415
Investments	523,757	600,814
Deferred taxes	55,521	62,688
Deferred compensation trusts	280,589	341,235
Other assets ($44,265 and $45,425 related to VIEs)	429,483	491,917
Total noncurrent assets	2,162,980	2,557,925
Total assets	7,292,469	7,966,658
Current liabilities
Accounts payable ($379,524 and $501,525 related to VIEs)	1,443,280	1,546,840
Short-term borrowings	51,204	38,727
Contract liabilities ($289,616 and $232,160 related to VIEs)	1,138,019	1,157,788
Accrued salaries, wages and benefits ($31,253 and $31,178 related to VIEs)	586,807	609,094
Other accrued liabilities ($44,185 and $21,088 related to VIEs)	425,897	470,351
Current liabilities related to assets held for sale	65,339	82,322
Total current liabilities	3,710,546	3,905,122
Long-term debt	1,647,173	1,651,739
Deferred taxes	79,420	83,295
Other noncurrent liabilities ($10,468 and $11,366 related to VIEs)	645,165	742,410
Contingencies and commitments
Shareholders’ equity
Preferred stock — authorized 20,000,000 shares ($0.01 par value); none issued	0	0
Common stock — authorized 375,000,000 shares ($0.01 par value); issued and outstanding — 140,533,363 and 140,174,400 shares in 2020 and 2019, respectively	1,403	1,399
Additional paid-in capital	170,750	165,314
Accumulated OCI	(499,353)	(379,873)
Retained earnings	1,418,845	1,700,912
Total shareholders’ equity	1,091,645	1,487,752
NCI	118,520	96,340
Total equity	1,210,165	1,584,092
Total liabilities and equity	$ 7,292,469	$ 7,966,658

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING CASH FLOW
Net earnings (loss)	$ (256,450)	$ (45,045)
Adjustments to reconcile net earnings (loss) to operating cash flow:
Loss on impairment - continuing operations	297,604	0
Loss on impairment - discontinued operations	100,000	0
Depreciation	26,528	45,264
Amortization of intangibles	2,189	4,567
(Earnings) loss from equity method investments, net of distributions	1,354	2,115
(Gain) loss on sales of property, plant and equipment	(948)	(1,858)
Amortization of stock-based awards	5,977	13,242
Deferred compensation trust	44,346	(26,145)
Deferred compensation obligation	(48,944)	28,584
Deferred taxes	(5,055)	(21,174)
Net retirement plan accrual (contributions)	(5,833)	(3,577)
Changes in assets and liabilities	(227,504)	(16,566)
Other	2,993	3,117
Operating cash flow	(63,743)	(17,476)
INVESTING CASH FLOW
Purchases of marketable securities	(6,115)	(8,180)
Proceeds from the sales and maturities of marketable securities	6,921	124,299
Capital expenditures	(30,094)	(48,172)
Proceeds from sales of property, plant and equipment	13,465	10,720
Investments in partnerships and joint ventures	(5,971)	(12,001)
Other	56	1,090
Investing cash flow	(21,738)	67,756
FINANCING CASH FLOW
Dividends paid	(14,700)	(30,005)
Other borrowings	22,203	7,692
Distributions paid to NCI	(2,751)	(10,152)
Capital contributions by NCI	19,968	4,767
Taxes paid on vested restricted stock	(1,208)	(3,549)
Stock options exercised	0	1,466
Other	(884)	(39)
Financing cash flow	22,628	(29,820)
Effect of exchange rate changes on cash	(63,472)	20,571
Increase (decrease) in cash and cash equivalents	(126,325)	41,031
Cash and cash equivalents at beginning of period	1,997,199	1,764,746
Cash and cash equivalents at end of period	$ 1,870,874	$ 1,805,777

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CURRENT ASSETS, VIEs
Cash and cash equivalents	$ 1,870,874	$ 1,997,199
Marketable securities, current	6,477	7,262
Accounts and notes receivable	1,097,800	1,217,464
Contract assets	1,310,686	1,238,173
Other current assets	477,013	389,565
Noncurrent assets
Net property, plant and equipment	567,148	552,856
Other noncurrent assets	429,483	491,917
CURRENT LIABILITIES, VIEs
Trade accounts payable	1,443,280	1,546,840
Accrued salaries, wages and benefits	586,807	609,094
Other accrued liabilities	425,897	470,351
Other noncurrent liabilities ($10,468 and $11,366 related to VIEs)	$ 645,165	$ 742,410
Shareholders' equity
Preferred stock, authorized shares (in shares)	20,000,000	20,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, issued shares (in shares)	0	0
Common stock, authorized shares (in shares)	375,000,000	375,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued shares (in shares)	140,533,363	140,174,400
Common stock, outstanding shares (in shares)	140,533,363	140,174,400
Consolidated variable interest entities
CURRENT ASSETS, VIEs
Cash and cash equivalents	$ 441,709	$ 392,772
Marketable securities, current	66	66
Accounts and notes receivable	279,915	329,548
Contract assets	282,050	294,116
Other current assets	21,166	32,271
Noncurrent assets
Net property, plant and equipment	28,841	29,492
Other noncurrent assets	44,265	45,425
CURRENT LIABILITIES, VIEs
Trade accounts payable	379,524	501,525
Advance billings on contracts	289,616	232,160
Accrued salaries, wages and benefits	31,253	31,178
Other accrued liabilities	44,185	21,088
Other noncurrent liabilities ($10,468 and $11,366 related to VIEs)	$ 10,468	$ 11,366

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total Shareholders' Equity	Noncontrolling Interests
BALANCE, beginning of year (in shares) at Dec. 31, 2018		139,654
Balance, beginning of year at Dec. 31, 2018	$ 2,980,253	$ 1,396	$ 82,106	$ (543,531)	$ 3,294,154	$ 2,834,125	$ 146,128
Increase (Decrease) in Shareholders' Equity
Net earnings (loss)	(45,045)				(68,904)	(68,904)	23,859
Other comprehensive loss	45,395			44,910		44,910	485
Dividends	(29,705)		218		(29,923)	(29,705)
Distributions to noncontrolling interests	(10,152)						(10,152)
Capital contributions by noncontrolling interests	4,767						4,767
Other noncontrolling interest transactions	(440)		1,035			1,035	(1,475)
Stock-based plan activity (in shares)		455
Stock-based plan activity	11,100	$ 3	11,097			11,100
BALANCE, end of year (in shares) at Mar. 31, 2019		140,109
Balance, end of year at Mar. 31, 2019	2,976,717	$ 1,399	94,456	(498,621)	3,215,871	2,813,105	163,612
BALANCE, beginning of year (in shares) at Dec. 31, 2019		140,174
Balance, beginning of year at Dec. 31, 2019	1,584,092	$ 1,399	165,314	(379,873)	1,700,912	1,487,752	96,340
Increase (Decrease) in Shareholders' Equity
Net earnings (loss)	(256,450)				(265,959)	(265,959)	9,509
Other comprehensive loss	(123,697)			(119,480)		(119,480)	(4,217)
Dividends	(14,131)				(14,131)	(14,131)
Distributions to noncontrolling interests	(2,751)						(2,751)
Capital contributions by noncontrolling interests	19,968						19,968
Other noncontrolling interest transactions	343		672			672	(329)
Stock-based plan activity (in shares)		359
Stock-based plan activity	4,768	$ 4	4,764			4,768
BALANCE, end of year (in shares) at Mar. 31, 2020		140,533
Balance, end of year at Mar. 31, 2020	$ 1,210,165	$ 1,403	$ 170,750	$ (499,353)	$ 1,418,845	$ 1,091,645	$ 118,520

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends (in dollars per share)	$ 0.10	$ 0.21

Principles of Consolidation

Principles of Consolidation	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation The financial statements do not include footnotes and certain financial information normally presented annually under GAAP, and therefore, should be read in conjunction with our 2019 10-K. Accounting measurements at interim dates inherently involve greater reliance on estimates than at year-end. Although such estimates are based on management’s most recent assessment of the underlying facts and circumstances utilizing the most current information available including considerations for the potential impacts of the coronavirus COVID-19, the results of operations for the three months ended March 31, 2020 may not necessarily be indicative of results that can be expected for the full year. The financial statements included herein are unaudited; however, they contain all adjustments of a normal recurring nature which, in the opinion of management, are necessary to present fairly our financial position as of March 31, 2020 and our results of operations and cash flows for the interim periods presented. All significant intercompany transactions of consolidated subsidiaries are eliminated. Certain amounts in 2019 have been reclassified to conform to the 2020 presentation, which includes the segregation of discontinued operations and assets and liabilities held for sale. Segment operating information for 2019 has been recast to reflect changes in the composition of our reportable segments. Management has evaluated all material events occurring subsequent to March 31, 2020 through the filing date of the Q1 2020 10-Q.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Pronouncements Implemented During the First Quarter of 2020 On January 1, 2020, we adopted ASC Topic 326, “Financial Instruments - Credit Losses,” which replaces the incurred loss impairment methodology with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate credit losses. The new guidance requires financial assets measured at amortized cost to be presented at the net amount expected to be collected. We adopted ASC 326 using the modified retrospective method, and accordingly, the new guidance was applied to financial assets measured at amortized cost (primarily accounts receivable and contract assets) that existed as of January 1, 2020 (the date of initial application). As a result, we recorded additional reserves for credit losses of $2 million and a cumulative effect adjustment to decrease retained earnings by $2 million as of January 1, 2020. The adoption of ASC 326 did not have a material impact on our results of operations or any impact on our cash flows. We utilize a combination of methods for estimating expected credit losses including loss rates, aging schedules and probability-of-default. In evaluating our historical loss rates, accounts receivable and contract assets are pooled into the following categories based on similar risk characteristics: (1) engineering, procurement and construction management; (2) government; (3) operations and maintenance; and (4) equipment leasing. Historical loss experience is adjusted for current conditions and reasonable and supportable forecasts, when applicable. Significantly aged receivables are evaluated individually by credit rating. For certain investments, we estimate the expected credit loss by multiplying the probability of default within a given timeframe by the percentage of the asset not expected to be collected due to default. Our reserve for credit losses amounted to $37 million and $35 million as of March 31, 2020 and December 31, 2019 , respectively. In the first quarter of 2020, we adopted ASU 2019-12, “Simplifying the Accounting for Income Taxes,” which eliminates certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The adoption did not have a material impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-18, “Clarifying the Interaction between Topic 808 and Topic 606,” which clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer. The adoption did not have any impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-17, “Targeted Improvements to Related Party Guidance for Variable Interest Entities,” which amends the guidance for determining whether a decision-making fee is a variable interest. The adoption did not have any impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-15, “Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract,” which requires customers in a hosting arrangement that is a service contract to capitalize certain implementation costs as if the arrangement was an internal-use software project. The adoption did not have any impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-13, “Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement,” which amends certain disclosure requirements for fair value measurements. For example, public companies will now be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. The adoption did not have any impact on our financial statements, but we have made additional disclosures related to the range and weighted average rates used to develop significant inputs for nonrecurring Level 3 measurements. Accounting Pronouncements Not Yet Implemented In August 2018, the FASB issued ASU 2018-14, “Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans,” which amends certain disclosure requirements related to defined benefit pension and other postretirement plans. ASU 2018-14 becomes effective for the company as of January 1, 2021, but management does not expect its adoption to have any impact on our financial statements.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Potentially dilutive securities include stock options, RSUs, restricted stock and VDI units. Diluted EPS reflects the assumed exercise or conversion of all dilutive securities using the treasury stock method. Three Months Ended (in thousands, except per share amounts) 2020 2019 Amounts attributable to Fluor Corporation: Net earnings (loss) from continuing operations $ (171,104 ) $ (68,090 ) Net earnings (loss) from discontinued operations (94,855 ) (814 ) Net earnings (loss) $ (265,959 ) $ (68,904 ) Basic EPS attributable to Fluor Corporation: Weighted average common shares outstanding 140,262 139,776 Net earnings (loss) from continuing operations $ (1.22 ) $ (0.49 ) Net earnings (loss) from discontinued operations (0.68 ) — Net earnings (loss) $ (1.90 ) $ (0.49 ) Diluted EPS attributable to Fluor Corporation: Weighted average common shares outstanding 140,262 139,776 Diluted effect: Stock options, RSUs, restricted stock and VDI units (1) — — Weighted average diluted shares outstanding 140,262 139,776 Net earnings (loss) from continuing operations $ (1.22 ) $ (0.49 ) Net earnings (loss) from discontinued operations (0.68 ) — Net earnings (loss) $ (1.90 ) $ (0.49 ) Anti-dilutive securities not included above 5,545 4,776 (1) Stock options, RSUs, restricted stock and VDI units totaling 438,000 and 740,000 were excluded from weighted average diluted shares outstanding for the three months ended March 31, 2020 and 2019

Operating Information by Segmen

Operating Information by Segment and Geographic Area	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Operating Information by Segment and Geographic Area	Operating Information by Segment and Geographic Area Three Months Ended (in millions) 2020 2019 Revenue Energy & Chemicals $ 1,355.5 $ 1,474.7 Mining & Industrial 1,173.9 1,051.3 Infrastructure & Power 385.9 344.0 Government 717.7 756.1 Diversified Services 457.1 488.4 Other 28.5 19.1 Total revenue $ 4,118.6 $ 4,133.6 Segment profit (loss) Energy & Chemicals $ (6.4 ) $ 12.2 Mining & Industrial 38.7 27.5 Infrastructure & Power 5.2 (21.8 ) Government 30.9 38.4 Diversified Services 5.1 8.7 Other (21.6 ) (26.1 ) Total segment profit (loss) $ 51.9 $ 38.9 Corporate G&A 14.1 (58.6 ) Impairment, restructuring and other exit costs (297.6 ) (27.4 ) Interest income (expense), net (6.3 ) (5.7 ) Earnings (loss) attributable to NCI from continuing operations 9.5 23.8 Earnings (loss) from continuing operations before taxes $ (228.4 ) $ (29.0 ) Energy & Chemicals. Segment profit in 2019 included charges of $61 million (or $0.33 per diluted share) resulting from forecast revision for estimated cost growth on an offshore project and $31 million (or $0.22 per diluted share) resulting from the resolution of certain close-out matters with a customer. Infrastructure & Power. Segment profit in 2019 included charges totaling $26 million (or $0.14 per diluted share) resulting from forecast revisions for estimated cost growth at certain lump-sum, power projects. Diversified Services. Intercompany revenue for Diversified Services, excluded from the amounts shown above, was $77 million and $80 million for the three months ended March 31, 2020 and 2019, respectively. Other . Segment loss for both periods included the operations of NuScale, which are primarily for research and development activities associated with the licensing and commercialization of small modular nuclear reactor technology. NuScale expenses included in the determination of segment loss were $23 million and $16 million for March 31, 2020 and 2019 , respectively, and were reported net of qualified reimbursable expenses of $13 million for both periods. Corporate G&A . Foreign currency gains and (losses) of $44 million and ( $19 million ) were included in corporate G&A during 2020 and 2019 , respectively. Total assets by segment are as follows: (in millions) March 31, December 31, Energy & Chemicals $ 1,006.8 $ 1,139.3 Mining & Industrial 624.1 594.9 Infrastructure & Power 505.0 471.2 Government 623.8 629.1 Diversified Services 1,004.0 1,290.6 Other 43.4 68.5 Corporate 3,232.7 3,379.3 Energy & Chemicals. In 2020, we recognized an other-than-temporary impairment of $86 million for equity method investments in "Impairment, restructuring and other exit costs" related to Energy & Chemicals. We also recorded a reserve of $55 million on receivables and contract assets in 2020 for expected credit losses associated with certain joint venture clients in Mexico that were affected by the impacts of COVID-19 and declining oil prices. Diversified Services. In 2020, we recognized impairment losses of $169 million on goodwill and $27 million on intangible customer relationships in the Diversified Services segment. Additionally, accounts receivable at March 31, 2020 decreased by $39 million compared to December 31, 2019. Revenue by project location follows: Three Months Ended (in millions) 2020 2019 North America $ 2,445.0 $ 1,905.7 Asia Pacific (including Australia) 326.6 419.9 Europe 671.7 1,010.6 Central and South America 507.3 454.0 Middle East and Africa 168.0 343.4 Total revenue $ 4,118.6 $ 4,133.6

Impairment, Restructuring and O

Impairment, Restructuring and Other Exit Costs	3 Months Ended
	Mar. 31, 2020
Restructuring and Related Activities [Abstract]
Impairment, Restructuring and Other Exit Costs	Impairment, Restructuring and Other Exit Costs Restructuring and Other Exit Costs During 2019, we initiated a broad restructuring plan designed to optimize costs and improve operational efficiency. These efforts primarily relate to the rationalization of resources, investments, real estate and overhead across various geographies, as well as the liquidation of certain components of the AMECO business that are being excluded from sale. We expect that our restructuring activities will be substantially completed in 2020. The company did not recognize any material restructuring costs during the three months ended March 31, 2020. Restructuring costs of $27 million , primarily related to severance, were recognized during the three months ended March 31, 2019. Costs recognized to date and the cumulative total cost expected to be incurred under the plan are reflected below: (in millions) Recognized to Date Expected to be Incurred Restructuring and other exit costs: Severance $ 63.9 $ 70.0 Asset impairments 90.4 90.4 Entity liquidation costs (including the recognition of cumulative translation adjustments) 83.7 85.0 Other exit costs 2.0 5.0 Total restructuring and other exit costs $ 240.0 $ 250.4 A reconciliation of the restructuring liabilities follows: (in thousands) Severance Lease Exit Costs Other Total Balance as of December 31, 2019 $ 46,303 $ 570 $ 307 $ 47,180 Restructuring charges accrued during the period (67 ) 94 506 533 Cash payments / settlements during the period (3,636 ) (640 ) (213 ) (4,489 ) Currency translation (172 ) — — (172 ) Balance as of March 31, 2020 $ 42,428 $ 24 $ 600 $ 43,052 Impairment Certain of our businesses have been adversely affected by the economic impacts of the outbreak of COVID-19 and the steep decline in commodity prices that occurred in the first quarter of 2020. Both of these events have created significant uncertainty and economic volatility and disruption, which have impacted and may continue to impact our business operations. We have experienced, and may continue to experience, reductions in demand for certain of our services and the delay or abandonment of ongoing or anticipated projects due to our clients’, suppliers’ and other third parties’ diminished financial condition or financial distress, as well as governmental budget constraints. These impacts are expected to continue or worsen if stay-at-home, social distancing, travel restrictions and other similar orders or restrictions remain in place for an extended period of time or are re-imposed after being relaxed. Significant uncertainty still exists concerning the magnitude of the impact and duration of these events. Because of these events and their impact on our operations through the date of this filing, we performed interim impairment testing of our goodwill, intangible assets and investments and recognized the following charges during the first quarter of 2020, which were included in “Impairment, restructuring and other exit costs”: • Impairment of goodwill associated with the Diversified Services reporting unit of approximately $169 million ; • Impairment of intangible customer relationships associated with the Stork business of $27 million ; • Other-than-temporary impairment of equity method investments in the Energy & Chemicals business of $86 million ; and • Impairment of information technology assets totaling $16 million . As part of our assessment of goodwill, the fair value of the reporting units was determined using an income based approach that utilized unobservable Level 3 inputs, including significant management assumptions such as expected awards, forecasted revenue and operating margins, weighted average cost of capital, working capital assumptions and general market trends and conditions. The customer relationships' valuation approach utilized unobservable Level 3 inputs including ranges of assumptions of long-term revenue growth from 2% to 5.5% with a weighted average of 2.4% , weighted average cost of capital of 12% and a customer attrition factor of 10% . The valuation of the equity method investments utilized unobservable Level 3 inputs based on the forecast of anticipated volumes and overhead absorption in a cyclical business.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate on earnings (loss) from continuing operations for the three months ended March 31, 2020 was 29.3% compared to (52.7)% for the three months ended March 31, 2019 . The effective tax rate in 2020 was favorably impacted by the release of valuation allowances and rate benefits resulting from the carryback of our 2019 federal net operating loss as allowed by the CARES Act, enacted on March 27, 2020. This benefit was offset by an increase in the valuation allowance against foreign tax credit carryforwards and certain foreign losses, as well as a small addition to uncertain tax benefits . The effective tax rate for the quarter ended March 31, 2019 was unfavorably impacted by the U.S. tax on global intangible low-tax income and foreign income tax rates that exceed the U.S. statutory rate of 21%, as well as the establishment of valuation allowances against certain foreign losses. Earnings attributable to non - controlling interests from continuing operations, for which income taxes are not typically our responsibility, favorably impacted the effective tax rate for March 31, 2019 .

Cash Paid for Interest and Taxe

Cash Paid for Interest and Taxes	3 Months Ended
	Mar. 31, 2020
Supplemental Cash Flow Information [Abstract]
Cash Paid for Interest and Taxes	Cash Paid for Interest and Taxes Cash paid for interest was $27 million and $28 million during the quarter ended March 31, 2020 and 2019 , respectively. Income tax payments, net of refunds, were $7 million and $33 million during the quarter ended March 31, 2020 and 2019 , respectively.

Partnerships and Joint Ventures

Partnerships and Joint Ventures	3 Months Ended
	Mar. 31, 2020
Partnerships and Joint Ventures
Partnerships and Joint Ventures	Partnerships and Joint Ventures In the normal course of business, we form partnerships or joint ventures primarily for the execution of single contracts or projects. The majority of these partnerships or joint ventures are characterized by a 50 percent or less noncontrolling ownership or participation interest with decision making and distribution of expected gains and losses typically being proportionate to the ownership or participation interest. Many of the partnership and joint venture agreements provide for capital calls to fund operations, as necessary. Accounts receivable related to work performed for unconsolidated partnerships and joint ventures included in “Accounts and notes receivable, net” was $175 million and $149 million as of March 31, 2020 and December 31, 2019 , respectively. During the first quarter of 2020, we evaluated our significant investments and determined that certain of our investments were other-than-temporarily impaired as of March 31, 2020 . As a result, impairment charges of $86 million were recognized. One of our more significant joint ventures is COOEC Fluor, in which we have a 49% ownership interest. COOEC Fluor owns, operates and manages the Zhuhai Fabrication Yard in China’s Guangdong province. We have a scheduled funding commitment to the joint venture of $26 million due at the end of 2020. Variable Interest Entities We assess our partnerships and joint ventures at inception to determine if any meet the qualifications of a VIE. We consider a partnership or joint venture a VIE if it has any of the following characteristics: (a) the total equity investment is not sufficient to permit the entity to finance its activities without additional subordinated financial support, (b) characteristics of a controlling financial interest are missing (either the ability to make decisions through voting or other rights, the obligation to absorb the expected losses of the entity or the right to receive the expected residual returns of the entity), or (c) the voting rights of the equity holders are not proportional to their obligations to absorb the expected losses of the entity and/or their rights to receive the expected residual returns of the entity, and substantially all of the entity's activities either involve or are conducted on behalf of an investor that has disproportionately few voting rights. Upon the occurrence of certain events, we reassess our initial determination of whether the partnership or joint venture is a VIE. The majority of our partnerships and joint ventures qualify as VIEs because the total equity investment is typically nominal and not sufficient to permit the entity to finance its activities without additional subordinated financial support. We also perform a qualitative assessment of each VIE to determine if we are its primary beneficiary. We conclude that we are the primary beneficiary and consolidates the VIE if we have both (a) the power to direct the economically significant activities of the entity and (b) the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to the VIE. We consider the contractual agreements that define the ownership structure, distribution of profits and losses, risks, responsibilities, indebtedness, voting rights and board representation of the respective parties in determining if we are the primary beneficiary. We also consider all parties that have direct or implicit variable interests when determining whether we are the primary beneficiary. Management's assessment of whether we are the primary beneficiary of a VIE is continuously performed. The net carrying value of unconsolidated VIEs (classified under both "Investments” and “Other accrued liabilities”) was a net asset of $256 million and $217 million as of March 31, 2020 and December 31, 2019 , respectively. Some of our VIEs have debt; however, such debt is typically non-recourse in nature. Our maximum exposure to loss as a result of our investments in unconsolidated VIEs is typically limited to the aggregate of the carrying value of the investment and future funding necessary to satisfy the contractual obligations of the VIE. Future funding commitments as of March 31, 2020 for the unconsolidated VIEs were $77 million . In some cases, we are required to consolidate certain VIEs. As of March 31, 2020 , the carrying values of the assets and liabilities associated with the operations of the consolidated VIEs were $1.1 billion and $763 million , respectively. As of December 31, 2019 , the carrying values of the assets and liabilities associated with the operations of the consolidated VIEs were $1.1 billion and $798 million , respectively. The assets of a VIE are restricted for use only for the particular VIE and are not available for our general operations. We have agreements with certain VIEs to provide financial or performance assurances to clients, as discussed elsewhere.

Guarantees

Guarantees	3 Months Ended
	Mar. 31, 2020
Guarantees [Abstract]
Guarantees	Guarantees In the ordinary course of business, we enter into various agreements providing performance assurances and guarantees to our clients on behalf of certain unconsolidated and consolidated partnerships, joint ventures and other jointly executed contracts. These agreements are entered into primarily to support project execution commitments. The performance guarantees have various expiration dates ranging from mechanical completion of the project to a period extending beyond contract completion. The maximum potential amount of future payments that we could be required to make under outstanding performance guarantees, which represents the remaining cost of work to be performed, was estimated to be $17 billion as of March 31, 2020 . Amounts that may be required to be paid in excess of estimated cost to complete contracts in progress are not estimable. For cost reimbursable contracts, amounts that may become payable pursuant to guarantee provisions are normally recoverable from the client for work performed. For lump-sum or fixed-price contracts, the performance guarantee amount is the cost to complete the contracted work, less amounts remaining to be billed to the client under the contract. Remaining billable amounts could be greater or less than the cost to complete. In those cases where costs exceed the remaining amounts payable under the contract, we may have recourse to third parties, such as owners, co-venturers, subcontractors or vendors for claims. The performance guarantee obligation was not material as of March 31, 2020 and December 31, 2019 .

Contingencies and Commitments

Contingencies and Commitments	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Commitments	Contingencies and Commitments We and certain of our subsidiaries are subject to litigation, claims and other commitments and contingencies arising in the ordinary course of business. Although the asserted value of these matters may be significant, we currently do not expect that the ultimate resolution of any open matters will have a material adverse effect on our financial position or results of operations. Since May 2018, purported shareholders have filed various complaints against Fluor Corporation and certain of its current and former executives in the U.S. District Court for the Northern District of Texas. The plaintiffs purport to represent a class of shareholders who purchased or otherwise acquired Fluor common stock from August 14, 2013 through February 14, 2020, and seek to recover damages arising from alleged violations of federal securities laws. These claims are based on statements concerning Fluor’s internal and disclosure controls, risk management, revenue recognition, and Fluor’s gas-fired power business, which plaintiffs assert were materially misleading . As of May 26, 2020, these complaints have been consolidated into one matter. We filed a motion to dismiss the matter on July 1, 2020. A hearing on the motion to dismiss is anticipated to occur in late 2020 or early 2021. While no assurance can be given as to the ultimate outcome of this matter, we do not believe it is probable that a loss will be incurred. Since September 2018, nine separate purported shareholders' derivative actions were filed against current and former members of the Board of Directors, as well as certain of Fluor’s current and former executives. Fluor Corporation is named as a nominal defendant in the actions. These derivative actions purport to assert claims on behalf of Fluor Corporation and make substantially the same factual allegations as the securities class action matter discussed above and seek various forms of monetary and injunctive relief. These actions are pending in Texas state court (District Court for Dallas County), the U.S. District Court for the District of Delaware, the U.S. District Court for the Northern District of Texas, and the Court of Chancery of the State of Delaware. Certain of these actions have been consolidated and stayed until our motion to dismiss is ruled upon in the securities class action matter. While no assurance can be given as to the ultimate outcome of this matter, we do not believe it is probable that a loss will be incurred. Fluor Australia Ltd., our wholly-owned subsidiary (“Fluor Australia”), completed a cost reimbursable engineering, procurement and construction management services project for Santos Ltd. (“Santos”) involving a large network of natural gas gathering and processing facilities in Queensland, Australia. On December 13, 2016, Santos filed an action in Queensland Supreme Court against Fluor Australia, asserting various causes of action and seeking damages and/or a refund of contract proceeds paid of approximately AUD $1.47 billion . Santos has joined Fluor Corporation to the matter on the basis of a parent company guarantee issued for the project. We believe that the claims asserted by Santos are without merit and we are vigorously defending these claims. While no assurance can be given as to the ultimate outcome of this matter, we do not believe it is probable that a loss will be incurred. Accordingly, we have not recorded a charge as a result of this action. Fluor Limited, our wholly-owned subsidiary (“Fluor Limited”), and Fluor Arabia Limited, a partially-owned subsidiary (“Fluor Arabia”), completed cost reimbursable engineering, procurement and construction management services for Sadara Chemical Company (“Sadara”) involving a large petrochemical facility in Jubail, Kingdom of Saudi Arabia. On August 23, 2019, Fluor Limited and Fluor Arabia Limited commenced arbitration proceedings against Sadara after it refused to pay invoices totaling approximately $100 million due under the parties’ agreements. As part of the arbitration proceedings, Sadara has asserted various counterclaims for damages and/or a refund of contract proceeds paid totaling approximately USD $574 million against Fluor Limited and Fluor Arabia Limited. We believe that the counterclaims asserted by Sadara are without merit and are vigorously defending these claims. While no assurance can be given as to the ultimate outcome of the counterclaims, we do not believe it is probable that a loss will be incurred. Accordingly, we have not recorded a charge as a result of the counterclaims. Various wholly-owned subsidiaries of Fluor, in conjunction with a partner, TECHINT, (“Fluor/TECHINT”) performed engineering, procurement and construction management services on a cost reimbursable basis for Barrick involving a gold mine and ore processing facility on a site straddling the border between Argentina and Chile. In 2013 Barrick terminated the Fluor/TECHINT agreements for convenience and not due to the performance of Fluor/TECHINT. On August 12, 2016, Barrick filed a notice of arbitration against Fluor/TECHINT, demanding damages and/or a refund of contract proceeds paid of not less than USD $250 million under various claims relating to Fluor/TECHINT’s alleged performance. Proceedings were suspended while the parties explored a possible settlement. In August 2019, Barrick drew down $35 million of letters of credit from Fluor/TECHINT ( $23.5 million from Fluor and $11.5 million from TECHINT). Thereafter, Barrick proceeded to reactivate the arbitration. We believe that the claims asserted by Barrick are without merit and are vigorously defending these claims. While no assurance can be given as to the ultimate outcome of this matter, we do not believe it is probable that a loss will be incurred. Accordingly, we have not recorded a charge as a result of these claims. Purple Line Transit Partners, LLC (“PLTP”) entered into a Public Private Partnership Agreement (“PPPA”) with the Maryland Department of Transportation and the Maryland Transit Administration (together, the “State”) for the finance, design, construction, and operation of the Purple Line Project, a new light rail line in Maryland (the “Project”). PLTP is a limited liability company in which Fluor has a fifteen percent membership interest. PLTP entered into an Amended and Restated Design-Build Contract (the “DB Contract”) with Purple Line Transit Constructors, LLC (“PLTC”) as design-build contractor to perform PLTP’s design and construction obligations under the PPPA on a back-to-back basis. PLTC is a limited liability company in which Fluor has a fifty percent membership interest. The design and construction of the Project was significantly delayed by more than two and a half years due to events outside of PLTP or PLTC’s control. The PPPA contained a provision allowing PLTP the unconditional right to terminate the PPPA if certain events delayed the design and construction of the Project by 365 days or more. The DB Contract contained a similar provision allowing PLTC to terminate the DB Contract. Because of significant Project delays, in excess of 365 days, on May 1, 2020, PLTC gave notice to PLTP of PLTC’s intent to terminate the DB Contract. Upon receiving PLTC’s notice, on June 23, 2020, PLTP exercised its unconditional right to terminate the PPPA. The State has challenged PLTP’s termination of the PPPA and commenced a lawsuit in Maryland state court against PLTP alleging breach of the PPPA. We believe that PLTP and PLTC’s terminations of the PPPA and DB Contract, respectively, were justified and are vigorously defending against the State’s lawsuit. Other Matters We have made claims arising from the performance under our contracts. We recognize revenue for certain claims, including change orders in dispute and unapproved change orders in regard to both scope and price, when it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. We estimate the amount of revenue to be recognized on claims using the expected value method (i.e., the sum of a probability-weighted amount) or the most likely amount method, whichever offers better prediction. Factors considered in determining whether revenue associated with claims should be recognized include the following: (a) the legal basis for the claim, (b) additional costs were caused by circumstances that were unforeseen at the contract date and not the result of deficiencies in our performance, (c) claim-related costs are identifiable and considered reasonable in view of the work performed, and (d) evidence supporting the claim is objective and verifiable. Similarly, we recognize disputed back charges to suppliers or subcontractors as a reduction of cost when the same requirements have been satisfied. We periodically evaluate our positions and the amounts recognized with respect to all of our claims and back charges. As of March 31, 2020 and December 31, 2019 , we had recorded $209 million and $198 million , respectively, of claim revenue for costs incurred to date. Additional costs, which will increase the claim revenue balance over time, are expected to be incurred in future periods. We had also recorded disputed back charges totaling $2 million as of both March 31, 2020 and December 31, 2019 . We believe the ultimate recovery of amounts related to these claims and back charges is probable in accordance with ASC 606. From time to time, we enter into significant contracts with the U.S. government and its agencies. Government contracts are subject to audits and investigations by government representatives with respect to our compliance with various restrictions and regulations applicable to government contractors, including but not limited to the allowability of costs incurred under reimbursable contracts. In connection with performing government contracts, we maintain reserves for estimated exposures associated with these matters. Our operations are subject to and affected by federal, state and local laws and regulations regarding the protection of the environment. We maintain reserves for potential future environmental cost where such obligations are either known or considered probable, and can be reasonably estimated. We believe, based upon present information available to us, that our reserves with respect to future environmental cost are adequate and such future cost will not have a material effect on our consolidated financial position, results of operations or liquidity. On February 18

Contract Assets and Liabilities

Contract Assets and Liabilities	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract Assets and Liabilities	Contract Assets and Liabilities The following summarizes information about our contract assets and liabilities: (in millions) March 31, December 31, Information about contract assets: Contract assets Unbilled receivables $ 840 $ 851 Contract work in progress 471 387 Contract assets $ 1,311 $ 1,238 Advance billings deducted from contract assets $ 515 $ 574 Three Months Ended (in millions) 2020 2019 Information about contract liabilities: Revenue recognized during the year that was included in contract liabilities as of January 1 $ 543 $ 581 We estimate that our RUPO will be satisfied over the following periods: (in millions) March 31, 2020 Within 1 year $ 14,775 1 to 2 years 8,103 Thereafter 6,514 Total remaining unsatisfied performance obligations $ 29,392

Remaining Unsatisfied Performan

Remaining Unsatisfied Performance Obligations	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Remaining Unsatisfied Performance Obligations	Contract Assets and Liabilities The following summarizes information about our contract assets and liabilities: (in millions) March 31, December 31, Information about contract assets: Contract assets Unbilled receivables $ 840 $ 851 Contract work in progress 471 387 Contract assets $ 1,311 $ 1,238 Advance billings deducted from contract assets $ 515 $ 574 Three Months Ended (in millions) 2020 2019 Information about contract liabilities: Revenue recognized during the year that was included in contract liabilities as of January 1 $ 543 $ 581 We estimate that our RUPO will be satisfied over the following periods: (in millions) March 31, 2020 Within 1 year $ 14,775 1 to 2 years 8,103 Thereafter 6,514 Total remaining unsatisfied performance obligations $ 29,392

Debt and Letters of Credit

Debt and Letters of Credit	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Debt and Letters of Credit	Debt and Letters of Credit As of March 31, 2020 , letters of credit totaling $336 million were outstanding under committed lines of credit, which consist of a $1.7 billion Revolving Loan and Letter of Credit Facility and a $1.8 billion Revolving Loan and Letter of Credit Facility. Both facilities mature in February 2022. Each of the credit facilities may be increased up to an additional $500 million subject to certain conditions, and contain customary financial and restrictive covenants, including a debt-to-capitalization ratio that cannot exceed 0.6 to 1.0 and a limitation on the aggregate amount of debt of the greater of $750 million or €750 million for our subsidiaries. As of March 31, 2020 , our financial covenant limits our borrowings to approximately $675 million under our committed credit facilities. Borrowings under both facilities, which may be denominated in USD, EUR, GBP or CAD, bear interest at rates based on the Eurodollar Rate or an alternative base rate, plus an applicable borrowing margin. Due to the delays in the preparation of our financial statements for the quarters ended March 31, 2020 and June 30, 2020, we were not in compliance with certain reporting covenants under these facilities. We have entered into amendments to extend the first, second and third quarter deadlines until October 31, November 30 and December 31, 2020, respectively. As of March 31, 2020 , letters of credit totaling $968 million were also outstanding under uncommitted lines of credit.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The following table delineates assets and liabilities that are measured at fair value on a recurring basis: March 31, 2020 December 31, 2019 Fair Value Hierarchy Fair Value Hierarchy (in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets: Deferred compensation trusts (1) $ 7,091 $ 7,091 $ — $ — $ 7,719 $ 7,719 $ — $ — Derivative assets (2) Foreign currency 14,640 — 14,640 — 7,167 — 7,167 — Commodity — — — — 46 — 46 — Liabilities: Derivative liabilities (2) Foreign currency $ 18,168 $ — $ 18,168 $ — $ 6,561 $ — $ 6,561 $ — Commodity 6,985 — 6,985 — 1,247 — 1,247 — _________________________________________________________ (1) Consists of registered money market funds and an equity index fund. These investments, which are trading securities, represent the net asset value of the close of business at the end of the period based on the last trade or official close of an active market or exchange. (2) Foreign currency and commodity derivatives are estimated using pricing models with market-based inputs, which take into account the present value of estimated future cash flows. We have measured assets and liabilities held for sale and certain other impaired assets at fair value on a nonrecurring basis. The following summarizes information about financial instruments that are not required to be measured at fair value: March 31, 2020 December 31, 2019 (in thousands) Fair Value Hierarchy Carrying Value Fair Value Carrying Value Fair Value Assets: Cash (1) Level 1 $ 1,109,348 $ 1,109,348 $ 1,014,138 $ 1,014,138 Cash equivalents (2) Level 2 761,526 761,526 983,061 983,061 Marketable securities (3) Level 2 6,477 6,477 7,262 7,262 Notes receivable, including noncurrent portion (4) Level 3 24,513 24,513 28,117 28,117 Liabilities: 2016 Senior Notes (5) Level 2 $ 553,050 $ 349,659 $ 557,185 $ 562,399 2014 Senior Notes (5) Level 2 495,480 349,145 495,240 510,145 2018 Senior Notes (5) Level 2 594,660 409,692 594,502 609,918 Other borrowings, including noncurrent portion (6) Level 2 55,187 55,187 43,539 43,539 _________________________________________________________ (1) Cash consists of bank deposits. Carrying amounts approximate fair value. (2) Cash equivalents consist of held-to-maturity time deposits with maturities of three months or less at the date of purchase. The carrying amounts of these time deposits approximate fair value because of the short-term maturity of these instruments. (3) Marketable securities consist of held-to-maturity time deposits with original maturities greater than three months that will mature within one year. The carrying amounts of these time deposits approximate fair value because of the short-term maturity of these instruments. Amortized cost is not materially different from the fair value. (4) Notes receivable are carried at net realizable value which approximates fair value. Factors considered by the company in determining the fair value include the credit worthiness of the borrower, current interest rates, the term of the note and any collateral pledged as security. Notes receivable are periodically assessed for impairment. (5) The fair value of the Senior Notes was estimated based on the quoted market prices for these issues as of the end of the period. (6) Other borrowings primarily represent bank loans and other financing arrangements which mature within one year. The carrying amount of borrowings under these arrangements approximates fair value because of the short-term maturity.

Stock-Based Plans

Stock-Based Plans	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Plans	Stock-Based Plans Our executive and director stock-based compensation plans are described, and informational disclosures are provided, in the 2019 10-K. In the first quarter of 2019 , RSUs totaling 874,629 were granted to executives at a weighted-average grant date fair value of $38.30 per share. RSUs granted to executives in 2019 generally vest ratably over three years . The fair value of RSUs represents the closing price of our common stock on the date of grant discounted for the post-vest holding period, when applicable. There were no RSUs awarded to executives during the first quarter of 2020 . RSUs awarded to executives during 2020 occurred in September following the filing of our 2019 10-K. In the first quarter of 2019 , performance-based VDI units totaling 350,532 were awarded to executives. These awards vest after a period of approximately three years and contain annual performance conditions for each of the three years of the vesting period. The performance targets for each year are generally established in the first quarter. Under GAAP, performance-based awards are not deemed granted for accounting purposes until the performance targets have been established. During the first quarter of 2019 , units totaling 116,844 , 68,866 and 72,601 under the 2019, 2018 and 2017 VDI plans, respectively, were granted at weighted-average grant date fair values of $39.72 per share, $42.24 per share and $35.18 per share, respectively. For awards granted under the 2019, 2018 and 2017 VDI plans, the number of units are adjusted at the end of each performance period based on achievement of certain performance targets and market conditions, as defined in the VDI award agreements. The grant date fair value is determined by adjusting the closing price of our common stock on the date of grant for the effect of the market condition and for the post-vest holding period discount, when applicable. Units granted under the 2019, 2018 and 2017 VDI plans can only be settled in company stock and are accounted for as equity awards in accordance with GAAP. There were no VDI units awarded to executives during the first quarter of 2020 . VDI units awarded to executives during 2020 occurred in September following the filing of our 2019 10-K.

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2020
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans Net periodic pension expense for our defined benefit pension plans includes the following components: Three Months Ended (in thousands) Location of Component 2020 2019 Service cost Cost of revenue $ 4,384 $ 3,981 Interest cost Corp G&A 2,394 4,975 Expected return on assets Corp G&A (6,356 ) (8,279 ) Amortization of prior service credit Corp G&A (218 ) (225 ) Recognized net actuarial loss Corp G&A 1,402 2,619 Net periodic pension expense $ 1,606 $ 3,071 We currently expect to contribute up to $15 million into our defined benefit pension plans during 2020 , which is expected to be in excess of the minimum funding required. During the three months ended March 31, 2020 , we made contributions of approximately $7 million .

Derivatives and Hedging

Derivatives and Hedging	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	Derivatives and Hedging We attempt to limit foreign currency exposure in most of our contracts by denominating contract revenue in the currencies in which cost is incurred. Certain financial exposure, which includes currency and commodity price risk associated with engineering and construction contracts, currency risk associated with monetary assets and liabilities denominated in nonfunctional currencies and risk associated with interest rate volatility, may subject the company to earnings volatility. We may implement a hedging strategy utilizing derivatives instruments or hedging instruments to mitigate such risk. Our hedging instruments are designated as either fair value or cash flow hedges. We formally document our hedge relationships at inception, including identification of the hedging instruments and the hedged items, our risk management objectives and strategies for undertaking the hedge transaction, and the initial quantitative assessment of the hedging instrument's effectiveness in offsetting changes in the fair value of the hedged items. We subsequently assess hedge effectiveness qualitatively, unless the hedge relationship is no longer highly effective. All hedging instruments are recorded at fair value. For fair value hedges, the change in fair value is offset against the change in the fair value of the underlying asset or liability through earnings. For cash flow hedges, the change in fair value is recorded as a component of AOCI and is reclassified into earnings when the hedged item settles. For derivatives that are not designated or do not qualify as hedging instruments, the change in the fair value of the derivative is offset against the change in the fair value of the underlying asset or liability through earnings. In certain limited circumstances, foreign currency payment provisions could be deemed embedded derivatives. If an embedded foreign currency derivative is identified, the derivative is bifurcated from the host contract and the change in fair value is recognized through earnings. We maintain master netting arrangements with certain counterparties to facilitate the settlement of derivative instruments; however, we report the fair value of derivatives on a gross basis. Derivatives Designated as Hedges As of March 31, 2020 , we had total gross notional amounts of $726 million of foreign currency contracts (primarily related to the Canadian Dollar, Chinese Yuan, British Pound, Euro, Indian Rupee and Philippine Peso) and $1 million of commodity contracts that were designated as hedging instruments. The foreign currency contracts are of varying duration, none of which extend beyond March 2022. The commodity contracts expired in May 2020. The fair values of derivatives designated as hedging instruments follows: Asset Derivatives Liability Derivatives (in thousands) Balance Sheet Location March 31, December 31, Balance Sheet Location March 31, December 31, Foreign currency contracts Other current assets $ 4,933 $ 2,871 Other accrued liabilities $ 7,040 $ 1,585 Commodity contracts Other current assets — 10 Other accrued liabilities 158 — Foreign currency contracts Other assets 7,406 3,757 Noncurrent liabilities 11,128 4,747 Total $ 12,339 $ 6,638 $ 18,326 $ 6,332 The after-tax amount of gain (loss) recognized in OCI and reclassified from AOCI into earnings associated with derivative instruments designated as cash flow hedges follows: After-Tax Amount of Gain (Loss) Recognized in OCI After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings Three Months Ended Three Months Ended Cash Flow Hedges (in thousands) 2020 2019 Location of Gain (Loss) 2020 2019 Foreign currency contracts $ (5,140 ) $ 2,696 Total cost of revenue $ 626 $ (499 ) Commodity contracts (111 ) — Total cost of revenue 12 — Interest rate contracts — — Interest expense (419 ) (262 ) Total $ (5,251 ) $ 2,696 $ 219 $ (761 ) Derivatives Not Designated as Hedges As of March 31, 2020 , we also had total gross notional amounts of $89 million of foreign currency contracts and $21 million of commodity contracts that were not designated as hedging instruments. The foreign currency contracts primarily related to contract obligations denominated in nonfunctional currencies. As of March 31, 2020 , we had total gross notional amounts of $10 million associated with contractual foreign currency payment provisions that were deemed embedded derivatives. The gains and losses associated with derivatives not designated as hedges and embedded derivatives were not material during the three months ended March 31, 2020 and 2019

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The components of OCI follow: Three Months Ended Three Months Ended (in thousands) Before-Tax Amount Tax Benefit (Expense) Net-of-Tax Amount Before-Tax Amount Tax Benefit (Expense) Net-of-Tax Amount OCI: Foreign currency translation adjustments $ (111,101 ) $ — $ (111,101 ) $ 44,210 $ (2,014 ) $ 42,196 Ownership share of equity method investees’ OCI (2,519 ) (5,653 ) (8,172 ) (3,495 ) 1,173 (2,322 ) Defined benefit pension and postretirement plan adjustments 1,002 44 1,046 2,210 (146 ) 2,064 Unrealized gain (loss) on derivative contracts (5,874 ) 404 (5,470 ) 4,634 (1,177 ) 3,457 Total OCI (118,492 ) (5,205 ) (123,697 ) 47,559 (2,164 ) 45,395 Less: OCI attributable to NCI (4,217 ) — (4,217 ) 485 — 485 OCI attributable to Fluor Corporation $ (114,275 ) $ (5,205 ) $ (119,480 ) $ 47,074 $ (2,164 ) $ 44,910 The changes in AOCI balances follow: (in thousands) Foreign Ownership Defined Unrealized Accumulated Attributable to Fluor Corporation: Balance as of December 31, 2019 $ (242,950 ) $ (35,456 ) $ (99,197 ) $ (2,270 ) $ (379,873 ) OCI before reclassifications (106,884 ) (8,313 ) — (5,251 ) (120,448 ) Amounts reclassified from AOCI — 141 1,046 (219 ) 968 Net OCI (106,884 ) (8,172 ) 1,046 (5,470 ) (119,480 ) Balance as of March 31, 2020 $ (349,834 ) $ (43,628 ) $ (98,151 ) $ (7,740 ) $ (499,353 ) Attributable to NCI: Balance as of December 31, 2019 $ (5,051 ) $ — $ — $ — $ (5,051 ) OCI before reclassifications (4,217 ) — — — (4,217 ) Amounts reclassified from AOCI — — — — — Net OCI (4,217 ) — — — (4,217 ) Balance as of March 31, 2020 $ (9,268 ) $ — $ — $ — $ (9,268 ) Attributable to Fluor Corporation: Balance as of December 31, 2018 $ (309,800 ) $ (23,672 ) $ (204,649 ) $ (5,410 ) $ (543,531 ) OCI before reclassifications 41,711 (2,464 ) — 2,696 41,943 Amounts reclassified from AOCI — 142 2,064 761 2,967 Net OCI 41,711 (2,322 ) 2,064 3,457 44,910 Balance as of March 31, 2019 $ (268,089 ) $ (25,994 ) $ (202,585 ) $ (1,953 ) $ (498,621 ) Attributable to NCI: Balance as of December 31, 2018 $ (3,701 ) $ — $ — $ — $ (3,701 ) OCI before reclassifications 485 — — — 485 Amounts reclassified from AOCI — — — — — Net OCI 485 — — — 485 Balance as of March 31, 2019 $ (3,216 ) $ — $ — $ — $ (3,216 ) The reclassifications out of AOCI follow: Location in Statement of Operations Three Months Ended (in thousands) 2020 2019 Component of AOCI: Ownership share of equity method investees’ OCI Cost of revenue $ (188 ) $ (189 ) Income tax benefit Income tax expense (benefit) 47 47 Net of tax $ (141 ) $ (142 ) Defined benefit pension plan adjustments Corporate G&A $ (1,002 ) $ (2,210 ) Income tax benefit (expense) Income tax expense (benefit) (44 ) 146 Net of tax $ (1,046 ) $ (2,064 ) Unrealized gain (loss) on derivative contracts: Commodity and foreign currency contracts Various accounts (1) $ 642 $ (845 ) Interest rate contracts Interest expense (419 ) (420 ) Income tax benefit (expense) Income tax expense (benefit) (4 ) 504 Net of tax $ 219 $ (761 ) (1) Gains and losses on commodity and foreign currency derivative contracts were reclassified to "Cost of revenue" and "Corporate G&A".

Discontinued Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations We expect to complete the sale of the AMECO equipment business, which is reported in discontinued operations, within the next year. The assets and liabilities of the AMECO business are classified as held for sale. Due to the impact of Covid-19 and the steep decline in oil prices on the AMECO business during the first quarter of 2020, we recognized impairment charges of $100 million , of which $12 million related to goodwill, to write down the AMECO assets held for sale to fair value less cost to sell. The fair value of the AMECO assets were determined using a combination of observable level 2 inputs, including indicative offers and ongoing negotiations for the related assets. The legal fees associated with a previously divested business were reported in earnings (loss) from discontinued operations under "Other". Earnings from discontinued operations for the three months ended March 31, 2020 and 2019 follow: Three Months Ended Three Months Ended (in thousands) AMECO Other Total AMECO Other Total Revenue $ 60,538 $ — $ 60,538 $ 61,786 $ — $ 61,786 Cost of revenue 48,269 — 48,269 60,621 — 60,621 Corporate general and administrative expense 14 5,703 5,717 79 2,015 2,094 Impairment of assets held for sale 100,000 — 100,000 — — — Interest expense (income), net (50 ) — (50 ) (76 ) — (76 ) Total cost and expenses 148,233 5,703 153,936 60,624 2,015 62,639 Earnings (loss) before taxes from discontinued operations (87,695 ) (5,703 ) (93,398 ) 1,162 (2,015 ) (853 ) Income tax expense (benefit) 1,457 — 1,457 427 (466 ) (39 ) Net earnings (loss) from discontinued operations $ (89,152 ) $ (5,703 ) $ (94,855 ) $ 735 $ (1,549 ) $ (814 ) The carrying amounts of the major classes of assets and liabilities included as part of discontinued operations and classified as held for sale as of March 31, 2020 and December 31, 2019 follow: March 31, 2020 December 31, 2019 (in thousands) AMECO Other Total from Discontinued Operations Other Assets and Liabilities from Continuing Operations Total AMECO Other Total from Discontinued Operations Other Assets and Liabilities from Continuing Operations Total Accounts and notes receivable, net $ 49,305 $ 15,925 $ 65,230 $ 14,927 $ 80,157 $ 69,126 $ 15,925 $ 85,051 $ 17,513 $ 102,564 Contract assets 3,930 — 3,930 4,603 8,533 3,497 — 3,497 3,779 7,276 Other current assets 46,014 — 46,014 7,029 53,043 54,116 — 54,116 8,112 62,228 Current assets held for sale $ 99,249 $ 15,925 $ 115,174 $ 26,559 $ 141,733 $ 126,739 $ 15,925 $ 142,664 $ 29,404 $ 172,068 Property, plant and equipment, net $ 132,315 $ — $ 132,315 $ 59,683 $ 191,998 $ 232,792 $ — $ 232,792 $ 106,762 $ 339,554 Goodwill 37 — 37 7,311 7,348 12,338 — 12,338 9,295 21,633 Investments — — — 6,118 6,118 — — — 7,293 7,293 Other assets 5,135 — 5,135 14,307 19,442 5,868 — 5,868 12,654 18,522 Noncurrent assets held for sale (1) $ 137,487 $ — $ 137,487 $ 87,419 $ 224,906 $ 250,998 $ — $ 250,998 $ 136,004 $ 387,002 Total assets held for sale $ 236,736 $ 15,925 $ 252,661 $ 113,978 $ 366,639 $ 377,737 $ 15,925 $ 393,662 $ 165,408 $ 559,070 Accounts payable $ 14,438 $ 8 $ 14,446 $ 7,384 $ 21,830 $ 24,692 $ — $ 24,692 $ 6,702 $ 31,394 Contract liabilities 2,462 — 2,462 55 2,517 4,466 — 4,466 25 4,491 Accrued salaries, wages and benefits 8,177 — 8,177 118 8,295 8,913 — 8,913 919 9,832 Other accrued liabilities 7,604 461 8,065 10,288 18,353 9,451 — 9,451 11,562 21,013 Current liabilities held for sale $ 32,681 $ 469 $ 33,150 $ 17,845 $ 50,995 $ 47,522 $ — $ 47,522 $ 19,208 $ 66,730 Noncurrent liabilities held for sale (1) $ 3,638 $ — $ 3,638 $ 10,706 $ 14,344 $ 4,272 $ — $ 4,272 $ 11,320 $ 15,592 Total liabilities held for sale $ 36,319 $ 469 $ 36,788 $ 28,551 $ 65,339 $ 51,794 $ — $ 51,794 $ 30,528 $ 82,322 (1) Noncurrent assets and liabilities held for sale were classified as current on the Condensed Consolidated Balance Sheet as we expect to complete the sale of AMECO business within one year. Capital expenditures from discontinued operations were $8 million and $19 million during the three months ended March 31, 2020 and 2019 , respectively.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements - (Policies)	3 Months Ended
	Mar. 31, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Accounting Pronouncements Implemented During the First Quarter of 2020 On January 1, 2020, we adopted ASC Topic 326, “Financial Instruments - Credit Losses,” which replaces the incurred loss impairment methodology with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate credit losses. The new guidance requires financial assets measured at amortized cost to be presented at the net amount expected to be collected. We adopted ASC 326 using the modified retrospective method, and accordingly, the new guidance was applied to financial assets measured at amortized cost (primarily accounts receivable and contract assets) that existed as of January 1, 2020 (the date of initial application). As a result, we recorded additional reserves for credit losses of $2 million and a cumulative effect adjustment to decrease retained earnings by $2 million as of January 1, 2020. The adoption of ASC 326 did not have a material impact on our results of operations or any impact on our cash flows. We utilize a combination of methods for estimating expected credit losses including loss rates, aging schedules and probability-of-default. In evaluating our historical loss rates, accounts receivable and contract assets are pooled into the following categories based on similar risk characteristics: (1) engineering, procurement and construction management; (2) government; (3) operations and maintenance; and (4) equipment leasing. Historical loss experience is adjusted for current conditions and reasonable and supportable forecasts, when applicable. Significantly aged receivables are evaluated individually by credit rating. For certain investments, we estimate the expected credit loss by multiplying the probability of default within a given timeframe by the percentage of the asset not expected to be collected due to default. Our reserve for credit losses amounted to $37 million and $35 million as of March 31, 2020 and December 31, 2019 , respectively. In the first quarter of 2020, we adopted ASU 2019-12, “Simplifying the Accounting for Income Taxes,” which eliminates certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The adoption did not have a material impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-18, “Clarifying the Interaction between Topic 808 and Topic 606,” which clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer. The adoption did not have any impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-17, “Targeted Improvements to Related Party Guidance for Variable Interest Entities,” which amends the guidance for determining whether a decision-making fee is a variable interest. The adoption did not have any impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-15, “Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract,” which requires customers in a hosting arrangement that is a service contract to capitalize certain implementation costs as if the arrangement was an internal-use software project. The adoption did not have any impact on our financial statements. In the first quarter of 2020, we adopted ASU 2018-13, “Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement,” which amends certain disclosure requirements for fair value measurements. For example, public companies will now be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. The adoption did not have any impact on our financial statements, but we have made additional disclosures related to the range and weighted average rates used to develop significant inputs for nonrecurring Level 3 measurements. Accounting Pronouncements Not Yet Implemented In August 2018, the FASB issued ASU 2018-14, “Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans,” which amends certain disclosure requirements related to defined benefit pension and other postretirement plans. ASU 2018-14 becomes effective for the company as of January 1, 2021, but management does not expect its adoption to have any impact on our financial statements.

Earnings Per Share - (Tables)

Earnings Per Share - (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of calculations of basic and diluted EPS	Three Months Ended (in thousands, except per share amounts) 2020 2019 Amounts attributable to Fluor Corporation: Net earnings (loss) from continuing operations $ (171,104 ) $ (68,090 ) Net earnings (loss) from discontinued operations (94,855 ) (814 ) Net earnings (loss) $ (265,959 ) $ (68,904 ) Basic EPS attributable to Fluor Corporation: Weighted average common shares outstanding 140,262 139,776 Net earnings (loss) from continuing operations $ (1.22 ) $ (0.49 ) Net earnings (loss) from discontinued operations (0.68 ) — Net earnings (loss) $ (1.90 ) $ (0.49 ) Diluted EPS attributable to Fluor Corporation: Weighted average common shares outstanding 140,262 139,776 Diluted effect: Stock options, RSUs, restricted stock and VDI units (1) — — Weighted average diluted shares outstanding 140,262 139,776 Net earnings (loss) from continuing operations $ (1.22 ) $ (0.49 ) Net earnings (loss) from discontinued operations (0.68 ) — Net earnings (loss) $ (1.90 ) $ (0.49 ) Anti-dilutive securities not included above 5,545 4,776 (1) Stock options, RSUs, restricted stock and VDI units totaling 438,000 and 740,000 were excluded from weighted average diluted shares outstanding for the three months ended March 31, 2020 and 2019

Operating Information by Segm_2

Operating Information by Segment and Geographic Area - (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Schedule of operating information and assets by reportable segment	Three Months Ended (in millions) 2020 2019 Revenue Energy & Chemicals $ 1,355.5 $ 1,474.7 Mining & Industrial 1,173.9 1,051.3 Infrastructure & Power 385.9 344.0 Government 717.7 756.1 Diversified Services 457.1 488.4 Other 28.5 19.1 Total revenue $ 4,118.6 $ 4,133.6 Segment profit (loss) Energy & Chemicals $ (6.4 ) $ 12.2 Mining & Industrial 38.7 27.5 Infrastructure & Power 5.2 (21.8 ) Government 30.9 38.4 Diversified Services 5.1 8.7 Other (21.6 ) (26.1 ) Total segment profit (loss) $ 51.9 $ 38.9 Corporate G&A 14.1 (58.6 ) Impairment, restructuring and other exit costs (297.6 ) (27.4 ) Interest income (expense), net (6.3 ) (5.7 ) Earnings (loss) attributable to NCI from continuing operations 9.5 23.8 Earnings (loss) from continuing operations before taxes $ (228.4 ) $ (29.0 ) Total assets by segment are as follows: (in millions) March 31, December 31, Energy & Chemicals $ 1,006.8 $ 1,139.3 Mining & Industrial 624.1 594.9 Infrastructure & Power 505.0 471.2 Government 623.8 629.1 Diversified Services 1,004.0 1,290.6 Other 43.4 68.5 Corporate 3,232.7 3,379.3
Schedule of Revenues from External Customers and Assets by Geographical Areas	Revenue by project location follows: Three Months Ended (in millions) 2020 2019 North America $ 2,445.0 $ 1,905.7 Asia Pacific (including Australia) 326.6 419.9 Europe 671.7 1,010.6 Central and South America 507.3 454.0 Middle East and Africa 168.0 343.4 Total revenue $ 4,118.6 $ 4,133.6

Impairment, Restructuring and_2

Impairment, Restructuring and Other Exit Costs - (Tables)	3 Months Ended
	Mar. 31, 2020
Restructuring and Related Activities [Abstract]
Restructuring Liability	A reconciliation of the restructuring liabilities follows: (in thousands) Severance Lease Exit Costs Other Total Balance as of December 31, 2019 $ 46,303 $ 570 $ 307 $ 47,180 Restructuring charges accrued during the period (67 ) 94 506 533 Cash payments / settlements during the period (3,636 ) (640 ) (213 ) (4,489 ) Currency translation (172 ) — — (172 ) Balance as of March 31, 2020 $ 42,428 $ 24 $ 600 $ 43,052 (in millions) Recognized to Date Expected to be Incurred Restructuring and other exit costs: Severance $ 63.9 $ 70.0 Asset impairments 90.4 90.4 Entity liquidation costs (including the recognition of cumulative translation adjustments) 83.7 85.0 Other exit costs 2.0 5.0 Total restructuring and other exit costs $ 240.0 $ 250.4

Contract Assets and Liabiliti_2

Contract Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract Assets and Liabilities	The following summarizes information about our contract assets and liabilities: (in millions) March 31, December 31, Information about contract assets: Contract assets Unbilled receivables $ 840 $ 851 Contract work in progress 471 387 Contract assets $ 1,311 $ 1,238 Advance billings deducted from contract assets $ 515 $ 574 Three Months Ended (in millions) 2020 2019 Information about contract liabilities: Revenue recognized during the year that was included in contract liabilities as of January 1 $ 543 $ 581

Remaining Unsatisfied Perform_2

Remaining Unsatisfied Performance Obligations - (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Schedule of remaining performance obligation	We estimate that our RUPO will be satisfied over the following periods: (in millions) March 31, 2020 Within 1 year $ 14,775 1 to 2 years 8,103 Thereafter 6,514 Total remaining unsatisfied performance obligations $ 29,392

Fair Value Measurements - (Tabl

Fair Value Measurements - (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	The following table delineates assets and liabilities that are measured at fair value on a recurring basis: March 31, 2020 December 31, 2019 Fair Value Hierarchy Fair Value Hierarchy (in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets: Deferred compensation trusts (1) $ 7,091 $ 7,091 $ — $ — $ 7,719 $ 7,719 $ — $ — Derivative assets (2) Foreign currency 14,640 — 14,640 — 7,167 — 7,167 — Commodity — — — — 46 — 46 — Liabilities: Derivative liabilities (2) Foreign currency $ 18,168 $ — $ 18,168 $ — $ 6,561 $ — $ 6,561 $ — Commodity 6,985 — 6,985 — 1,247 — 1,247 — _________________________________________________________ (1) Consists of registered money market funds and an equity index fund. These investments, which are trading securities, represent the net asset value of the close of business at the end of the period based on the last trade or official close of an active market or exchange. (2)
Schedule of carrying values and estimated fair values of financial instruments not required to be measured at fair value	The following summarizes information about financial instruments that are not required to be measured at fair value: March 31, 2020 December 31, 2019 (in thousands) Fair Value Hierarchy Carrying Value Fair Value Carrying Value Fair Value Assets: Cash (1) Level 1 $ 1,109,348 $ 1,109,348 $ 1,014,138 $ 1,014,138 Cash equivalents (2) Level 2 761,526 761,526 983,061 983,061 Marketable securities (3) Level 2 6,477 6,477 7,262 7,262 Notes receivable, including noncurrent portion (4) Level 3 24,513 24,513 28,117 28,117 Liabilities: 2016 Senior Notes (5) Level 2 $ 553,050 $ 349,659 $ 557,185 $ 562,399 2014 Senior Notes (5) Level 2 495,480 349,145 495,240 510,145 2018 Senior Notes (5) Level 2 594,660 409,692 594,502 609,918 Other borrowings, including noncurrent portion (6) Level 2 55,187 55,187 43,539 43,539 _________________________________________________________ (1) Cash consists of bank deposits. Carrying amounts approximate fair value. (2) Cash equivalents consist of held-to-maturity time deposits with maturities of three months or less at the date of purchase. The carrying amounts of these time deposits approximate fair value because of the short-term maturity of these instruments. (3) Marketable securities consist of held-to-maturity time deposits with original maturities greater than three months that will mature within one year. The carrying amounts of these time deposits approximate fair value because of the short-term maturity of these instruments. Amortized cost is not materially different from the fair value. (4) Notes receivable are carried at net realizable value which approximates fair value. Factors considered by the company in determining the fair value include the credit worthiness of the borrower, current interest rates, the term of the note and any collateral pledged as security. Notes receivable are periodically assessed for impairment. (5) The fair value of the Senior Notes was estimated based on the quoted market prices for these issues as of the end of the period. (6) Other borrowings primarily represent bank loans and other financing arrangements which mature within one year. The carrying amount of borrowings under these arrangements approximates fair value because of the short-term maturity.

Retirement Plans - (Tables)

Retirement Plans - (Tables)	3 Months Ended
	Mar. 31, 2020
Retirement Benefits [Abstract]
Schedule of components of net periodic pension expense	Net periodic pension expense for our defined benefit pension plans includes the following components: Three Months Ended (in thousands) Location of Component 2020 2019 Service cost Cost of revenue $ 4,384 $ 3,981 Interest cost Corp G&A 2,394 4,975 Expected return on assets Corp G&A (6,356 ) (8,279 ) Amortization of prior service credit Corp G&A (218 ) (225 ) Recognized net actuarial loss Corp G&A 1,402 2,619 Net periodic pension expense $ 1,606 $ 3,071

Derivatives and Hedging - (Tabl

Derivatives and Hedging - (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of fair values of derivatives designated as hedging instruments under ASC 815	The fair values of derivatives designated as hedging instruments follows: Asset Derivatives Liability Derivatives (in thousands) Balance Sheet Location March 31, December 31, Balance Sheet Location March 31, December 31, Foreign currency contracts Other current assets $ 4,933 $ 2,871 Other accrued liabilities $ 7,040 $ 1,585 Commodity contracts Other current assets — 10 Other accrued liabilities 158 — Foreign currency contracts Other assets 7,406 3,757 Noncurrent liabilities 11,128 4,747 Total $ 12,339 $ 6,638 $ 18,326 $ 6,332
Schedule of derivative instrument gain (loss)	The after-tax amount of gain (loss) recognized in OCI and reclassified from AOCI into earnings associated with derivative instruments designated as cash flow hedges follows: After-Tax Amount of Gain (Loss) Recognized in OCI After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings Three Months Ended Three Months Ended Cash Flow Hedges (in thousands) 2020 2019 Location of Gain (Loss) 2020 2019 Foreign currency contracts $ (5,140 ) $ 2,696 Total cost of revenue $ 626 $ (499 ) Commodity contracts (111 ) — Total cost of revenue 12 — Interest rate contracts — — Interest expense (419 ) (262 ) Total $ (5,251 ) $ 2,696 $ 219 $ (761 )
Schedule of after-tax amount of gain (loss) recognized in OCI and reclassified from AOCI into earnings associated with derivative instruments designated as cash flow hedges	After-Tax Amount of Gain (Loss) Recognized in OCI After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings Three Months Ended Three Months Ended Cash Flow Hedges (in thousands) 2020 2019 Location of Gain (Loss) 2020 2019 Foreign currency contracts $ (5,140 ) $ 2,696 Total cost of revenue $ 626 $ (499 ) Commodity contracts (111 ) — Total cost of revenue 12 — Interest rate contracts — — Interest expense (419 ) (262 ) Total $ (5,251 ) $ 2,696 $ 219 $ (761 )

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) - (Tables)	3 Months Ended
	Mar. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule of tax effects of components of other comprehensive income (loss)	The components of OCI follow: Three Months Ended Three Months Ended (in thousands) Before-Tax Amount Tax Benefit (Expense) Net-of-Tax Amount Before-Tax Amount Tax Benefit (Expense) Net-of-Tax Amount OCI: Foreign currency translation adjustments $ (111,101 ) $ — $ (111,101 ) $ 44,210 $ (2,014 ) $ 42,196 Ownership share of equity method investees’ OCI (2,519 ) (5,653 ) (8,172 ) (3,495 ) 1,173 (2,322 ) Defined benefit pension and postretirement plan adjustments 1,002 44 1,046 2,210 (146 ) 2,064 Unrealized gain (loss) on derivative contracts (5,874 ) 404 (5,470 ) 4,634 (1,177 ) 3,457 Total OCI (118,492 ) (5,205 ) (123,697 ) 47,559 (2,164 ) 45,395 Less: OCI attributable to NCI (4,217 ) — (4,217 ) 485 — 485 OCI attributable to Fluor Corporation $ (114,275 ) $ (5,205 ) $ (119,480 ) $ 47,074 $ (2,164 ) $ 44,910
Schedule of changes in accumulated other comprehensive income balances by component (after-tax)	The changes in AOCI balances follow: (in thousands) Foreign Ownership Defined Unrealized Accumulated Attributable to Fluor Corporation: Balance as of December 31, 2019 $ (242,950 ) $ (35,456 ) $ (99,197 ) $ (2,270 ) $ (379,873 ) OCI before reclassifications (106,884 ) (8,313 ) — (5,251 ) (120,448 ) Amounts reclassified from AOCI — 141 1,046 (219 ) 968 Net OCI (106,884 ) (8,172 ) 1,046 (5,470 ) (119,480 ) Balance as of March 31, 2020 $ (349,834 ) $ (43,628 ) $ (98,151 ) $ (7,740 ) $ (499,353 ) Attributable to NCI: Balance as of December 31, 2019 $ (5,051 ) $ — $ — $ — $ (5,051 ) OCI before reclassifications (4,217 ) — — — (4,217 ) Amounts reclassified from AOCI — — — — — Net OCI (4,217 ) — — — (4,217 ) Balance as of March 31, 2020 $ (9,268 ) $ — $ — $ — $ (9,268 ) Attributable to Fluor Corporation: Balance as of December 31, 2018 $ (309,800 ) $ (23,672 ) $ (204,649 ) $ (5,410 ) $ (543,531 ) OCI before reclassifications 41,711 (2,464 ) — 2,696 41,943 Amounts reclassified from AOCI — 142 2,064 761 2,967 Net OCI 41,711 (2,322 ) 2,064 3,457 44,910 Balance as of March 31, 2019 $ (268,089 ) $ (25,994 ) $ (202,585 ) $ (1,953 ) $ (498,621 ) Attributable to NCI: Balance as of December 31, 2018 $ (3,701 ) $ — $ — $ — $ (3,701 ) OCI before reclassifications 485 — — — 485 Amounts reclassified from AOCI — — — — — Net OCI 485 — — — 485 Balance as of March 31, 2019 $ (3,216 ) $ — $ — $ — $ (3,216 )
Schedule of significant items reclassified out of AOCI and corresponding location and impact	The reclassifications out of AOCI follow: Location in Statement of Operations Three Months Ended (in thousands) 2020 2019 Component of AOCI: Ownership share of equity method investees’ OCI Cost of revenue $ (188 ) $ (189 ) Income tax benefit Income tax expense (benefit) 47 47 Net of tax $ (141 ) $ (142 ) Defined benefit pension plan adjustments Corporate G&A $ (1,002 ) $ (2,210 ) Income tax benefit (expense) Income tax expense (benefit) (44 ) 146 Net of tax $ (1,046 ) $ (2,064 ) Unrealized gain (loss) on derivative contracts: Commodity and foreign currency contracts Various accounts (1) $ 642 $ (845 ) Interest rate contracts Interest expense (419 ) (420 ) Income tax benefit (expense) Income tax expense (benefit) (4 ) 504 Net of tax $ 219 $ (761 ) (1) Gains and losses on commodity and foreign currency derivative contracts were reclassified to "Cost of revenue" and "Corporate G&A".

Discontinued Operations - (Tabl

Discontinued Operations - (Tables)	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Earnings from discontinued operations, net of tax	Earnings from discontinued operations for the three months ended March 31, 2020 and 2019 follow: Three Months Ended Three Months Ended (in thousands) AMECO Other Total AMECO Other Total Revenue $ 60,538 $ — $ 60,538 $ 61,786 $ — $ 61,786 Cost of revenue 48,269 — 48,269 60,621 — 60,621 Corporate general and administrative expense 14 5,703 5,717 79 2,015 2,094 Impairment of assets held for sale 100,000 — 100,000 — — — Interest expense (income), net (50 ) — (50 ) (76 ) — (76 ) Total cost and expenses 148,233 5,703 153,936 60,624 2,015 62,639 Earnings (loss) before taxes from discontinued operations (87,695 ) (5,703 ) (93,398 ) 1,162 (2,015 ) (853 ) Income tax expense (benefit) 1,457 — 1,457 427 (466 ) (39 ) Net earnings (loss) from discontinued operations $ (89,152 ) $ (5,703 ) $ (94,855 ) $ 735 $ (1,549 ) $ (814 )
Assets and liabilities held for sale	The carrying amounts of the major classes of assets and liabilities included as part of discontinued operations and classified as held for sale as of March 31, 2020 and December 31, 2019 follow: March 31, 2020 December 31, 2019 (in thousands) AMECO Other Total from Discontinued Operations Other Assets and Liabilities from Continuing Operations Total AMECO Other Total from Discontinued Operations Other Assets and Liabilities from Continuing Operations Total Accounts and notes receivable, net $ 49,305 $ 15,925 $ 65,230 $ 14,927 $ 80,157 $ 69,126 $ 15,925 $ 85,051 $ 17,513 $ 102,564 Contract assets 3,930 — 3,930 4,603 8,533 3,497 — 3,497 3,779 7,276 Other current assets 46,014 — 46,014 7,029 53,043 54,116 — 54,116 8,112 62,228 Current assets held for sale $ 99,249 $ 15,925 $ 115,174 $ 26,559 $ 141,733 $ 126,739 $ 15,925 $ 142,664 $ 29,404 $ 172,068 Property, plant and equipment, net $ 132,315 $ — $ 132,315 $ 59,683 $ 191,998 $ 232,792 $ — $ 232,792 $ 106,762 $ 339,554 Goodwill 37 — 37 7,311 7,348 12,338 — 12,338 9,295 21,633 Investments — — — 6,118 6,118 — — — 7,293 7,293 Other assets 5,135 — 5,135 14,307 19,442 5,868 — 5,868 12,654 18,522 Noncurrent assets held for sale (1) $ 137,487 $ — $ 137,487 $ 87,419 $ 224,906 $ 250,998 $ — $ 250,998 $ 136,004 $ 387,002 Total assets held for sale $ 236,736 $ 15,925 $ 252,661 $ 113,978 $ 366,639 $ 377,737 $ 15,925 $ 393,662 $ 165,408 $ 559,070 Accounts payable $ 14,438 $ 8 $ 14,446 $ 7,384 $ 21,830 $ 24,692 $ — $ 24,692 $ 6,702 $ 31,394 Contract liabilities 2,462 — 2,462 55 2,517 4,466 — 4,466 25 4,491 Accrued salaries, wages and benefits 8,177 — 8,177 118 8,295 8,913 — 8,913 919 9,832 Other accrued liabilities 7,604 461 8,065 10,288 18,353 9,451 — 9,451 11,562 21,013 Current liabilities held for sale $ 32,681 $ 469 $ 33,150 $ 17,845 $ 50,995 $ 47,522 $ — $ 47,522 $ 19,208 $ 66,730 Noncurrent liabilities held for sale (1) $ 3,638 $ — $ 3,638 $ 10,706 $ 14,344 $ 4,272 $ — $ 4,272 $ 11,320 $ 15,592 Total liabilities held for sale $ 36,319 $ 469 $ 36,788 $ 28,551 $ 65,339 $ 51,794 $ — $ 51,794 $ 30,528 $ 82,322 (1) Noncurrent assets and liabilities held for sale were classified as current on the Condensed Consolidated Balance Sheet as we expect to complete the sale of AMECO business within one year.

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reserve for credit loss	$ 37,000		$ 35,000
Retained earnings	$ (1,418,845)		$ (1,700,912)
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reserve for credit loss		$ 2,000
Retained earnings		$ 2,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Amounts attributable to Fluor Corporation:
Net earnings (loss) from continuing operations	$ (171,104)	$ (68,090)
Net earnings (loss) from discontinued operations	(94,855)	(814)
Net earnings (loss) attributable to Fluor Corporation	$ (265,959)	$ (68,904)
Basic EPS attributable to Fluor Corporation:
Weighted average common shares outstanding (shares)	140,262	139,776
Earnings (loss) from continuing operations (in dollars per share)	$ (1.22)	$ (0.49)
Earnings (loss) from discontinued operations, net of taxes (in dollars per share)	(0.68)	0
Net earnings (in dollars per share)	$ (1.90)	$ (0.49)
Diluted EPS attributable to Fluor Corporation:
Weighted average common shares outstanding (shares)	140,262	139,776
Diluted effect:
Employee stock options, restricted stock units and shares and Value Driver Incentive units (in shares)	0	0
Weighted average diluted shares outstanding (in shares)	140,262	139,776
Earnings (loss) from continuing operations (in dollars per share)	$ (1.22)	$ (0.49)
Earnings, (loss) from discontinued operations, net of taxes (in dollars per share)	(0.68)	0
Net earnings (in dollars per share)	$ (1.90)	$ (0.49)
Anti-dilutive securities not included above (in shares)	5,545	4,776
Employee stock options, restricted stock units and shares, and Value Driver Incentive units
Diluted effect:
Anti-dilutive securities not included above (in shares)	438	740

Operating Information by Segm_3

Operating Information by Segment and Geographic Area - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 4,118,556	$ 4,133,612
Corporate G&A	14,052	(58,621)
Impairment, restructuring and other exit costs	297,604	27,368
Earnings (loss) from continuing operations before taxes	(228,426)	(28,974)
Continuing Operations
Segment Reporting Information [Line Items]
Corporate G&A	14,100	(58,600)
Impairment, restructuring and other exit costs	297,600	27,400
Interest income (expense), net	(6,300)	(5,700)
Earnings (loss) attributable to NCI from continuing operations	9,500	23,800
Earnings (loss) from continuing operations before taxes	(228,400)	(29,000)
Continuing Operations | Reportable segments
Segment Reporting Information [Line Items]
Revenue	4,118,600	4,133,600
Segment profit (loss)	51,900	38,900
Continuing Operations | Energy & Chemicals | Reportable segments
Segment Reporting Information [Line Items]
Revenue	1,355,500	1,474,700
Segment profit (loss)	(6,400)	12,200
Continuing Operations | Mining and Industrial segment | Reportable segments
Segment Reporting Information [Line Items]
Revenue	1,173,900	1,051,300
Segment profit (loss)	38,700	27,500
Continuing Operations | Infrastructure & Power | Reportable segments
Segment Reporting Information [Line Items]
Revenue	385,900	344,000
Segment profit (loss)	5,200	(21,800)
Continuing Operations | Government | Reportable segments
Segment Reporting Information [Line Items]
Revenue	717,700	756,100
Segment profit (loss)	30,900	38,400
Continuing Operations | Diversified Services | Reportable segments
Segment Reporting Information [Line Items]
Revenue	457,100	488,400
Segment profit (loss)	5,100	8,700
Continuing Operations | Other | Reportable segments
Segment Reporting Information [Line Items]
Revenue	28,500	19,100
Segment profit (loss)	$ (21,600)	$ (26,100)

Operating Information by Segm_4

Operating Information by Segment and Geographic Area - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment reporting information
Revenue	$ 4,118,556	$ 4,133,612
General and Administrative Expense
Segment reporting information
Foreign currency gains and (losses)	44,000	(19,000)
Energy & Chemicals
Segment reporting information
Other than temporary impairment for equity method investments	86,000
Energy & Chemicals | Credit Losses Associated with Clients Affected by Impacts of COVID-19
Segment reporting information
Allowance for doubtful accounts on receivables	55,000
Diversified Services
Segment reporting information
Impairment loss	169,000
Impairment of intangible assets	27,000
Decrease in accounts receivable	39,000
Reportable segments | Infrastructure & Power | Forecast revisions for estimated cost growth for a fixed-price, gas-fired power plant project
Segment reporting information
Effect of forecast revision on estimated project cost		$ 26,000
Effect of forecast revision on estimated project cost (in dollars per share)		$ 0.14
Reportable segments | Other | Nu Scale Power
Segment reporting information
Research and development expense	23,000	$ 16,000
Reportable segments | Other | Nu Scale Power | Cost-sharing agreement, research and development activities | U.S. Department of Energy | Total cost of revenue
Segment reporting information
Qualified expenses reimbursed	13,000	13,000
Intersegment Eliminations | Diversified Services
Segment reporting information
Revenue	$ 77,000	80,000
North America | Energy & Chemicals
Segment reporting information
Change in cost and schedule impacts		$ 31,000
Change in cost and schedule impacts (in dollars per share)		$ 0.22
North America | Energy & Chemicals | Forecast Revisions For Estimated Cost Growth On An Offshore Project
Segment reporting information
Pre-tax charges adversely affecting earnings before taxes		$ 61,000
Pre-tax charges adversely affecting earnings before taxes (in dollars per share)		$ 0.33

Operating Information by Segm_5

Operating Information by Segment and Geographic Area - Total Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Segment reporting information
Total assets	$ 7,292,469	$ 7,966,658
Other
Segment reporting information
Total assets	43,400	68,500
Corporate
Segment reporting information
Total assets	3,232,700	3,379,300
Reportable segments | Energy & Chemicals
Segment reporting information
Total assets	1,006,800	1,139,300
Reportable segments | Mining & Industrial
Segment reporting information
Total assets	624,100	594,900
Reportable segments | Infrastructure & Power
Segment reporting information
Total assets	505,000	471,200
Reportable segments | Government
Segment reporting information
Total assets	623,800	629,100
Reportable segments | Diversified Services
Segment reporting information
Total assets	$ 1,004,000	$ 1,290,600

Operating Information by Segm_6

Operating Information by Segment and Geographic Area - External Revenue and Total Assets by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 4,118,556	$ 4,133,612
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	2,445,000	1,905,700
Asia Pacific (including Australia)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	326,600	419,900
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	671,700	1,010,600
Central and South America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	507,300	454,000
Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 168,000	$ 343,400

Impairment, Restructuring and_3

Impairment, Restructuring and Other Exit Costs - Narrative (Details) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)shares	Mar. 31, 2019USD ($)shares
Restructuring [Line Items]
Severance	$ 70
Asset impairments	90.4
Entity liquidation costs (including the recognition of cumulative translation adjustments)	85
Other exit costs	5
Severance	$ 63.9	$ 27
Anti-dilutive securities not included above (in shares) | shares	5,545	4,776
Technology-Based Intangible Assets
Restructuring [Line Items]
Impairment of information technology assets	$ 16
Diversified Services
Restructuring [Line Items]
Impairment loss	169
Impairment of intangible assets	27
Energy & Chemicals
Restructuring [Line Items]
Other than temporary impairment for equity method investments	$ 86
Employee stock options, restricted stock units and shares, and Value Driver Incentive units
Restructuring [Line Items]
Anti-dilutive securities not included above (in shares) | shares	438	740
Level 3 | Weighted Average Long-term Revenue Growth Rate | Customer Relationships
Restructuring [Line Items]
Intangible assets, measurement input	0.024
Level 3 | Weighted Average Cost of Capital | Customer Relationships
Restructuring [Line Items]
Intangible assets, measurement input	0.12
Level 3 | Customer Attrition Factor | Customer Relationships
Restructuring [Line Items]
Intangible assets, measurement input	0.10
Level 3 | Minimum | Long-term Revenue Growth Rate | Customer Relationships
Restructuring [Line Items]
Intangible assets, measurement input	0.02
Level 3 | Maximum | Long-term Revenue Growth Rate | Customer Relationships
Restructuring [Line Items]
Intangible assets, measurement input	0.055

Impairment, Restructuring and_4

Impairment, Restructuring and Other Exit Costs - Restructuring Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Recognized to Date
Severance	$ 63.9	$ 27
Asset impairments	90.4
Entity liquidation costs (including the recognition of cumulative translation adjustments)	83.7
Other exit costs	2
Total restructuring and other exit costs	240
Expected to be Incurred
Severance	70
Asset impairments	90.4
Entity liquidation costs (including the recognition of cumulative translation adjustments)	85
Other exit costs	5
Total restructuring and other exit costs	$ 250.4

Impairment, Restructuring and_5

Impairment, Restructuring and Other Exit Costs - Restructuring Liability (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Severance
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	$ 46,303
Restructuring charges accrued during the period	(67)
Cash payments / settlements during the period	(3,636)
Currency translation	(172)
Balance as of March 31, 2020	42,428
Lease Exit Costs
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	570
Restructuring charges accrued during the period	94
Cash payments / settlements during the period	(640)
Currency translation	0
Balance as of March 31, 2020	24
Other
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	307
Restructuring charges accrued during the period	506
Cash payments / settlements during the period	(213)
Currency translation	0
Balance as of March 31, 2020	600
Total
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	47,180
Restructuring charges accrued during the period	533
Cash payments / settlements during the period	(4,489)
Currency translation	(172)
Balance as of March 31, 2020	$ 43,052

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Effective tax rate, continuing operations (as a percent)	29.30%	(52.70%)

Cash Paid for Interest and Ta_2

Cash Paid for Interest and Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid during the year for:
Interest	$ 27	$ 28
Income taxes (net of refunds)	$ 7	$ 33

Partnerships and Joint Ventur_2

Partnerships and Joint Ventures - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Cooec Fluor Heavy Industries Co. Limited
Variable interest entity information
Commitment amount	$ 26
Unconsolidated variable interest entities | Accounts and notes receivable, net
Variable interest entity information
Receivables related to work performed for unconsolidated partnerships and joint ventures	$ 175	$ 149
Cooec Fluor Heavy Industries Co. Limited
Variable interest entity information
Ownership percentage	49.00%
Energy & Chemicals
Variable interest entity information
Other than temporary impairment for equity method investments	$ 86
Minority Interest Ownership Percentage by Parent | Partnership | Majority
Variable interest entity information
Entity's interest in partnership or joint venture (as a percent)	50.00%

Partnerships and Joint Ventur_3

Partnerships and Joint Ventures - Variable Interest Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Variable interest entity information
Carrying value of assets	$ 7,292,469	$ 7,966,658
Unconsolidated variable interest entities
Variable interest entity information
Net carrying value of the unconsolidated VIEs	256,000	217,000
Unconsolidated variable interest entities | Future funding commitment
Variable interest entity information
Commitment amount	77,000
Consolidated variable interest entities
Variable interest entity information
Carrying value of assets	1,100,000	1,100,000
Carrying value of liabilities	$ 763,000	$ 798,000

Guarantees - Narrative (Details

Guarantees - Narrative (Details) $ in Billions	Mar. 31, 2020USD ($)
Performance Guarantee
Guarantor Obligations [Line Items]
Estimated performance guarantees outstanding	$ 17

Contingencies and Commitments -

Contingencies and Commitments - Narrative (Details) $ in Millions	Aug. 23, 2019AUD ($)	Dec. 13, 2016AUD ($)	Sep. 30, 2018action	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Aug. 31, 2019USD ($)	Aug. 23, 2019USD ($)	Aug. 12, 2016USD ($)
Loss Contingencies [Line Items]
Number of actions filed | action			9
Contracts receivable				$ 209,000,000	$ 198,000,000
Amount of disputed back charges				$ 2,000,000	$ 2,000,000
Pending Litigation
Loss Contingencies [Line Items]
Damages sought		$ 1,470
Sadara Chemical Company | Pending Litigation
Loss Contingencies [Line Items]
Damages sought	$ 100
Estimate of possible loss							$ 574,000,000
Fluor/TECHINT | Pending Litigation
Loss Contingencies [Line Items]
Estimate of possible loss								$ 250,000,000
Purple Line Transit Project | Minimum
Loss Contingencies [Line Items]
Right to terminate contract period				365 days
DB Contract | Minimum
Loss Contingencies [Line Items]
Right to terminate contract period				365 days
Barrick | Fluor/TECHINT
Loss Contingencies [Line Items]
Letters of credit outstanding, amount						$ 35,000,000
Parent Company | Barrick | Fluor/TECHINT
Loss Contingencies [Line Items]
Letters of credit outstanding, amount						23,500,000
Partnership Interest | Barrick | Fluor/TECHINT
Loss Contingencies [Line Items]
Letters of credit outstanding, amount						$ 11,500,000
Purple Line Transit Partners, LLC
Loss Contingencies [Line Items]
Partnership ownership interest				15.00%
Purple Line Transit Constructors, LLC
Loss Contingencies [Line Items]
Partnership ownership interest				50.00%

Contract Assets and Liabiliti_3

Contract Assets and Liabilities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Unbilled receivables	$ 840,000		$ 851,000
Contract work in progress	471,000		387,000
Contract assets	1,310,686		1,238,173
Advance billings deducted from contract assets	515,000		$ 574,000
Revenue recognized during the year that was included in contract liabilities as of January 1	$ 543,000	$ 581,000

Remaining Unsatisfied Perform_3

Remaining Unsatisfied Performance Obligations - Schedule of remaining performance obligation (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 29,392
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	14,775
Remaining performance obligation ( in years )		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	8,103
Remaining performance obligation ( in years )		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 6,514
Remaining performance obligation ( in years )

Remaining Unsatisfied Perform_4

Remaining Unsatisfied Performance Obligations - Narrative (Details) $ in Millions	Mar. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Remaining performance obligation	$ 29,392

Debt and Letters of Credit (Det

Debt and Letters of Credit (Details) - 3 months ended Mar. 31, 2020 - Lines of credit € in Millions	USD ($)	EUR (€)
Committed credit line
Financing Arrangements
Amount outstanding under credit facilities	$ 336,000,000
Current borrowing capacity	675,000,000
Committed credit line | $1.7 billion Revolving Loan and Letter of Credit Facility
Financing Arrangements
Maximum borrowing capacity	1,700,000,000
Maximum borrowing capacity additional amount, subject to certain conditions	$ 500,000,000
Committed credit line | $1.7 billion Revolving Loan and Letter of Credit Facility | Minimum
Financing Arrangements
Ratio of consolidated debt to tangible net worth (as a percent)	60.00%
Committed credit line | $1.7 billion Revolving Loan and Letter of Credit Facility | Minimum | Subsidiaries
Financing Arrangements
Aggregate amount of debt | €		€ 750
Committed credit line | $1.7 billion Revolving Loan and Letter of Credit Facility | Maximum
Financing Arrangements
Ratio of consolidated debt to tangible net worth (as a percent)	100.00%
Committed credit line | $1.7 billion Revolving Loan and Letter of Credit Facility | Maximum | Subsidiaries
Financing Arrangements
Aggregate amount of debt	$ 750,000,000
Committed credit line | $1.8 billion Revolving Loan and Letter of Credit Facility
Financing Arrangements
Maximum borrowing capacity	1,800,000,000
Uncommitted Credit Line
Financing Arrangements
Amount outstanding under credit facilities	$ 968,000,000

Fair Value Measurements - Recu

Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair value of assets and liabilities measured on recurring basis
Derivative assets	$ 12,339	$ 6,638
Derivative liabilities	18,326	6,332
Fair Value, Measurements, Recurring
Fair value of assets and liabilities measured on recurring basis
Deferred compensation trusts	7,091	7,719
Fair Value, Measurements, Recurring | Foreign currency contracts
Fair value of assets and liabilities measured on recurring basis
Derivative assets	14,640	7,167
Derivative liabilities	18,168	6,561
Fair Value, Measurements, Recurring | Commodity
Fair value of assets and liabilities measured on recurring basis
Derivative assets	0	46
Derivative liabilities	6,985	1,247
Fair Value, Measurements, Recurring | Level 1
Fair value of assets and liabilities measured on recurring basis
Deferred compensation trusts	7,091	7,719
Fair Value, Measurements, Recurring | Level 2 | Foreign currency contracts
Fair value of assets and liabilities measured on recurring basis
Derivative assets	14,640	7,167
Derivative liabilities	18,168	6,561
Fair Value, Measurements, Recurring | Level 2 | Commodity
Fair value of assets and liabilities measured on recurring basis
Derivative assets	0	46
Derivative liabilities	$ 6,985	$ 1,247

Fair Value Measurements - Fina

Fair Value Measurements - Financial Instruments Not Required to be Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Carrying Value | Level 2
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Marketable securities, current	$ 6,477	$ 7,262
Carrying Value | Level 2 | 1.750% Senior Notes
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	553,050	557,185
Carrying Value | Level 2 | 3.375% Senior Notes
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	495,480	495,240
Carrying Value | Level 2 | 3.5% Senior Notes
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	594,660	594,502
Carrying Value | Level 2 | Other borrowings
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	55,187	43,539
Carrying Value | Level 3
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Notes receivable, including noncurrent portion	24,513	28,117
Fair Value | Level 2
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Marketable securities, current	6,477	7,262
Fair Value | Level 2 | 1.750% Senior Notes
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	349,659	562,399
Fair Value | Level 2 | 3.375% Senior Notes
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	349,145	510,145
Fair Value | Level 2 | 3.5% Senior Notes
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	409,692	609,918
Fair Value | Level 2 | Other borrowings
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Debt	55,187	43,539
Fair Value | Level 3
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Notes receivable, including noncurrent portion	24,513	28,117
Cash | Carrying Value | Level 1
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Cash and cash equivalents	1,109,348	1,014,138
Cash | Fair Value | Level 1
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Cash and cash equivalents	1,109,348	1,014,138
Cash equivalents | Carrying Value | Level 2
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Cash and cash equivalents	761,526	983,061
Cash equivalents | Fair Value | Level 2
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis
Cash and cash equivalents	$ 761,526	$ 983,061

Stock-Based Plans - Narrative (

Stock-Based Plans - Narrative (Details) - Executives - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restricted stock units
Stock-Based Plans
Granted (in shares)		874,629
Granted, weighted average grant date fair value (in dollars per share)		$ 38.30
Post-vest holding period ( in years )		3 years
Vesting period ( in years )		3 years
Stock-based VDI units
Stock-Based Plans
Granted (in shares)		350,532
Vesting period ( in years )	3 years
Stock-based VDI units | 2019 VDI Plan
Stock-Based Plans
Post-vest holding period ( in years )	3 years
Expected amount of shares granted (in shares)	116,844
Expected weighted average grant date fair value (in dollars per share)	$ 39.72
Stock-based VDI units | 2018 VDI Plan
Stock-Based Plans
Expected amount of shares granted (in shares)	68,866
Expected weighted average grant date fair value (in dollars per share)	$ 42.24
Stock-based VDI units | 2017 VDI Plan
Stock-Based Plans
Expected amount of shares granted (in shares)	72,601
Expected weighted average grant date fair value (in dollars per share)	$ 35.18

Retirement Plans - Net Periodic

Retirement Plans - Net Periodic Pension Expense and Narrative (Details) - Defined Benefit Pension Plans - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net periodic pension expense for defined benefit pension plans
Service cost	$ 4,384	$ 3,981
Interest cost	2,394	4,975
Expected return on assets	(6,356)	(8,279)
Amortization of prior service credit	(218)	(225)
Recognized net actuarial loss	1,402	2,619
Net periodic pension expense	1,606	$ 3,071
Company contributions	7,000
Maximum
Net periodic pension expense for defined benefit pension plans
Expected contributions during next fiscal year	$ 15,000

Derivatives and Hedging - Narra

Derivatives and Hedging - Narrative (Details) $ in Millions	Mar. 31, 2020USD ($)
Foreign currency contracts
Derivatives, Fair Value [Line Items]
Gross notional amounts	$ 726
Foreign currency contracts | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Gross notional amounts	89
Commodity contracts | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Gross notional amounts	1
Commodity contracts | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Gross notional amounts	21
Embedded derivatives
Derivatives, Fair Value [Line Items]
Gross notional amounts	$ 10

Derivatives and Hedging - Notio

Derivatives and Hedging - Notional Amounts and Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 12,339	$ 6,638
Liability Derivatives	18,326	6,332
Other accrued liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	158	0
Foreign currency contracts | Other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	4,933	2,871
Foreign currency contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	7,406	3,757
Foreign currency contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	7,040	1,585
Foreign currency contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	11,128	4,747
Commodity contracts | Other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 0	$ 10

Derivatives and Hedging - Gains

Derivatives and Hedging - Gains (Losses) Associated with Fair Value and Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss)
After-Tax Amount of Gain (Loss) Recognized in OCI	$ (5,251)	$ 2,696
After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings	219	(761)
Foreign currency contracts | Total cost of revenue
Derivative Instruments, Gain (Loss)
After-Tax Amount of Gain (Loss) Recognized in OCI	(5,140)	2,696
After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings	626	(499)
Commodity
Derivative Instruments, Gain (Loss)
After-Tax Amount of Gain (Loss) Recognized in OCI	(111)	0
Commodity | Total cost of revenue
Derivative Instruments, Gain (Loss)
After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings	12	0
Interest rate contracts | Interest expense
Derivative Instruments, Gain (Loss)
After-Tax Amount of Gain (Loss) Recognized in OCI	0	0
After-Tax Amount of Gain (Loss) Reclassified from AOCI into Earnings	$ (419)	$ (262)

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) - Tax Effects of Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	$ (118,492)	$ 47,559
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	(5,205)	(2,164)
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	(123,697)	45,395
Foreign currency translation adjustments
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	(111,101)	44,210
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	0	(2,014)
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	(111,101)	42,196
Ownership share of equity method investees’ OCI
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	(2,519)	(3,495)
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	(5,653)	1,173
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	(8,172)	(2,322)
Defined benefit pension and postretirement plan adjustments
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	1,002	2,210
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	44	(146)
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	1,046	2,064
Unrealized gain (loss) on derivative contracts
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	(5,874)	4,634
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	404	(1,177)
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	(5,470)	3,457
Less: OCI attributable to NCI
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	(4,217)	485
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	0	0
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	(4,217)	485
Accumulated Other Comprehensive Loss
Other comprehensive income (loss), Before-Tax Amount:
Before-Tax Amount	(114,275)	47,074
Other comprehensive income (loss), Tax Benefit (Expense):
Tax Benefit (Expense)	(5,205)	(2,164)
Other comprehensive income (loss), Net-of-Tax Amount:
Total OCI, net of tax	$ (119,480)	$ 44,910

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) - Changes in AOCI Balances by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	$ 1,584,092	$ 2,980,253
Total OCI, net of tax	(123,697)	45,395
Balance, end of year	1,210,165	2,976,717
Accumulated OCI, Net
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(379,873)	(543,531)
Other comprehensive income (loss) before reclassifications	(120,448)	41,943
Amounts reclassified from AOCI	968	2,967
Total OCI, net of tax	(119,480)	44,910
Balance, end of year	(499,353)	(498,621)
Foreign Currency Translation
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(242,950)	(309,800)
Other comprehensive income (loss) before reclassifications	(106,884)	41,711
Amounts reclassified from AOCI	0	0
Total OCI, net of tax	(106,884)	41,711
Balance, end of year	(349,834)	(268,089)
Ownership Share of Equity Method Investees’ Other Comprehensive Income (Loss)
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(35,456)	(23,672)
Other comprehensive income (loss) before reclassifications	(8,313)	(2,464)
Amounts reclassified from AOCI	141	142
Total OCI, net of tax	(8,172)	(2,322)
Balance, end of year	(43,628)	(25,994)
Defined Benefit Pension and Postretirement Plans
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(99,197)	(204,649)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI	1,046	2,064
Total OCI, net of tax	1,046	2,064
Balance, end of year	(98,151)	(202,585)
Unrealized Gain (Loss) on Derivative Contracts
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(2,270)	(5,410)
Other comprehensive income (loss) before reclassifications	(5,251)	2,696
Amounts reclassified from AOCI	(219)	761
Total OCI, net of tax	(5,470)	3,457
Balance, end of year	(7,740)	(1,953)
Accumulated Other Comprehensive Income (Loss), Net Attributable to Noncontrolling Interests
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(5,051)	(3,701)
Balance, end of year	(9,268)	(3,216)
Foreign Currency Translation
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	(5,051)	(3,701)
Other comprehensive income (loss) before reclassifications	(4,217)	485
Amounts reclassified from AOCI	0	0
Total OCI, net of tax	(4,217)	485
Balance, end of year	(9,268)	(3,216)
Ownership Share of Equity Method Investees’ Other Comprehensive Income (Loss)
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	0	0
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI	0	0
Total OCI, net of tax	0	0
Balance, end of year	0	0
Defined Benefit Pension and Postretirement Plans
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	0	0
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI	0	0
Total OCI, net of tax	0	0
Balance, end of year	0	0
Unrealized Gain (Loss) on Derivative Contracts
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	0	0
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI	0	0
Total OCI, net of tax	0	0
Balance, end of year	0	0
Noncontrolling Interests
Changes in AOCI balances by component (after-tax)
Balance, beginning of year	96,340	146,128
Other comprehensive income (loss) before reclassifications	(4,217)	485
Amounts reclassified from AOCI	0	0
Total OCI, net of tax	(4,217)	485
Balance, end of year	$ 118,520	$ 163,612

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) - Significant Items Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reclassifications out of accumulated other comprehensive income (loss)
Cost of revenue	$ (4,057,159)	$ (4,070,859)
Income tax expense (benefit)	66,831	(15,257)
Interest expense	(18,323)	(18,630)
Net earnings (loss)	(256,450)	(45,045)
Ownership Share of Equity Method Investees’ Other Comprehensive Income (Loss) | Reclassified out of AOCI
Reclassifications out of accumulated other comprehensive income (loss)
Cost of revenue	(188)	(189)
Income tax expense (benefit)	47	47
Net of tax	(141)	(142)
Defined Benefit Pension and Postretirement Plans | Reclassified out of AOCI
Reclassifications out of accumulated other comprehensive income (loss)
Income tax expense (benefit)	(44)	146
Corporate G&A	(1,002)	(2,210)
Net of tax	(1,046)	(2,064)
Accumulated OCI, Net | Reclassified out of AOCI
Reclassifications out of accumulated other comprehensive income (loss)
Income tax expense (benefit)	(4)	504
Net earnings (loss)	219	(761)
Accumulated OCI, Net | Reclassified out of AOCI | Commodity and foreign currency contracts
Reclassifications out of accumulated other comprehensive income (loss)
Cost of revenue	642	(845)
Accumulated OCI, Net | Reclassified out of AOCI | Interest rate contracts
Reclassifications out of accumulated other comprehensive income (loss)
Interest expense	$ (419)	$ (420)

Discontinued Operations - Narra

Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets held for sale	$ 100,000	$ 0
Capital expenditure, discontinued operations	(8,000)	(19,000)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets held for sale	100,000	0
AMECO | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets held for sale	100,000	$ 0
Impairment loss	$ 12,000

Discontinued Operations - Finan

Discontinued Operations - Financial Information of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets held for sale	$ 100,000	$ 0
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	60,538	61,786
Cost of revenue	48,269	60,621
Corporate general and administrative expense	5,717	2,094
Impairment of assets held for sale	100,000	0
Interest expense (income), net	(50)	(76)
Total cost and expenses	153,936	62,639
Earnings (loss) before taxes from discontinued operations	(93,398)	(853)
Income tax expense (benefit)	1,457	(39)
Net earnings (loss) from discontinued operations	(94,855)	(814)
Discontinued Operations | AMECO
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	60,538	61,786
Cost of revenue	48,269	60,621
Corporate general and administrative expense	14	79
Impairment of assets held for sale	100,000	0
Interest expense (income), net	(50)	(76)
Total cost and expenses	148,233	60,624
Earnings (loss) before taxes from discontinued operations	(87,695)	1,162
Income tax expense (benefit)	1,457	427
Net earnings (loss) from discontinued operations	(89,152)	735
Discontinued Operations | Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	0
Cost of revenue	0	0
Corporate general and administrative expense	5,703	2,015
Impairment of assets held for sale	0	0
Interest expense (income), net	0	0
Total cost and expenses	5,703	2,015
Earnings (loss) before taxes from discontinued operations	(5,703)	(2,015)
Income tax expense (benefit)	0	(466)
Net earnings (loss) from discontinued operations	$ (5,703)	$ (1,549)

Discontinued Operations - Asset

Discontinued Operations - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contract assets	$ 1,310,686	$ 1,238,173
Other accrued liabilities	425,897	470,351
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable, net	65,230	85,051
Contract assets	3,930	3,497
Other current assets	46,014	54,116
Current assets held for sale	115,174	142,664
Property, plant and equipment, net	132,315	232,792
Goodwill	37	12,338
Investments	0	0
Other assets	5,135	5,868
Noncurrent assets held for sale	137,487	250,998
Total assets held for sale	252,661	393,662
Accounts payable	14,446	24,692
Contract liabilities	2,462	4,466
Accrued salaries, wages and benefits	8,177	8,913
Other accrued liabilities	8,065	9,451
Current liabilities held for sale	33,150	47,522
Noncurrent liabilities held for sale	3,638	4,272
Total liabilities held for sale	36,788	51,794
Discontinued Operations | AMECO
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable, net	49,305	69,126
Contract assets	3,930	3,497
Other current assets	46,014	54,116
Current assets held for sale	99,249	126,739
Property, plant and equipment, net	132,315	232,792
Goodwill	37	12,338
Investments	0	0
Other assets	5,135	5,868
Noncurrent assets held for sale	137,487	250,998
Total assets held for sale	236,736	377,737
Accounts payable	14,438	24,692
Contract liabilities	2,462	4,466
Accrued salaries, wages and benefits	8,177	8,913
Other accrued liabilities	7,604	9,451
Current liabilities held for sale	32,681	47,522
Noncurrent liabilities held for sale	3,638	4,272
Total liabilities held for sale	36,319	51,794
Discontinued Operations | Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable, net	15,925	15,925
Contract assets	0	0
Other current assets	0	0
Current assets held for sale	15,925	15,925
Property, plant and equipment, net	0	0
Goodwill	0	0
Investments	0	0
Other assets	0	0
Noncurrent assets held for sale	0	0
Total assets held for sale	15,925	15,925
Accounts payable	8	0
Contract liabilities	0	0
Accrued salaries, wages and benefits	0	0
Other accrued liabilities	461	0
Current liabilities held for sale	469	0
Noncurrent liabilities held for sale	0	0
Total liabilities held for sale	469	0
Continuing Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable, net	14,927	17,513
Contract assets	4,603	3,779
Other current assets	7,029	8,112
Current assets held for sale	26,559	29,404
Property, plant and equipment, net	59,683	106,762
Goodwill	7,311	9,295
Investments	6,118	7,293
Other assets	14,307	12,654
Noncurrent assets held for sale	87,419	136,004
Total assets held for sale	113,978	165,408
Accounts payable	7,384	6,702
Contract liabilities	55	25
Accrued salaries, wages and benefits	118	919
Other accrued liabilities	10,288	11,562
Current liabilities held for sale	17,845	19,208
Noncurrent liabilities held for sale	10,706	11,320
Total liabilities held for sale	28,551	30,528
Total
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable, net	80,157	102,564
Contract assets	8,533	7,276
Other current assets	53,043	62,228
Current assets held for sale	141,733	172,068
Property, plant and equipment, net	191,998	339,554
Goodwill	7,348	21,633
Investments	6,118	7,293
Other assets	19,442	18,522
Noncurrent assets held for sale	224,906	387,002
Total assets held for sale	366,639	559,070
Accounts payable	21,830	31,394
Contract liabilities	2,517	4,491
Accrued salaries, wages and benefits	8,295	9,832
Other accrued liabilities	18,353	21,013
Current liabilities held for sale	50,995	66,730
Noncurrent liabilities held for sale	14,344	15,592
Total liabilities held for sale	$ 65,339	$ 82,322

Uncategorized Items - flr-20200

Label	Element	Value
Accounting Standards Update 2016-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (1,977,000)
Accounting Standards Update 2016-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(1,977,000)
Accounting Standards Update 2016-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(1,977,000)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	20,544,000
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	20,544,000
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 20,544,000