v3.19.2
Document and Entity Information Document - shares
6 Months Ended
Jun. 30, 2019
Jul. 18, 2019
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2019  
Document Transition Report false  
Entity File Number 001-14875  
Entity Registrant Name FTI CONSULTING, INC  
Entity Central Index Key 0000887936  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 52-1261113  
Entity Address, Address Line One 555 12th Street NW  
Entity Address, City or Town Washington  
Entity Address, State or Province DC  
Entity Address, Postal Zip Code 20004  
City Area Code 202  
Local Phone Number 312-9100  
Title of 12(b) Security Common Stock, $0.01 par value  
Trading Symbol FCN  
Security Exchange Name NYSE  
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 Common Stock, Shares Outstanding   37,540,197