Document and Entity Information
Jul. 25, 2019
Cover [Abstract]  
Entity Registrant Name FTI CONSULTING, INC
Entity Address, State or Province DC
Amendment Flag false
Entity Central Index Key 0000887936
Document Type 8-K
Document Period End Date Jul. 25, 2019
Entity Incorporation, State or Country Code MD
Entity File Number 001-14875
Entity Tax Identification Number 52-1261113
Entity Address, Address Line One 555 12th Street NW
Entity Address, City or Town Washington
Entity Address, Postal Zip Code 20004
City Area Code (202)
Local Phone Number 312-9100
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol FCN
Security Exchange Name NYSE
Entity Emerging Growth Company false