XML 20 R1.htm IDEA: XBRL DOCUMENT v3.22.0.1
Cover page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2021
Jan. 31, 2022
Jun. 30, 2021
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
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 Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 2.5
Entity Common Stock, Shares Outstanding   141,434,771  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
DocumentParts Into Which Incorporated
Portions of the Proxy Statement for the Annual Meeting of Stockholders to be held on May 5, 2022.Part III
    
Entity Central Index Key 0001124198    
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
ICFR Auditor Attestation Flag true    
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    
Senior Notes 1.750%, Due 2023 | NEW YORK STOCK EXCHANGE, INC.      
Entity Information [Line Items]      
Title of 12(b) Security 1.750% Senior Notes due 2023    
Trading Symbol FLR 23    
Security Exchange Name NYSE