XML 22 R1.htm IDEA: XBRL DOCUMENT v3.19.3
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2019
Oct. 29, 2019
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Trading Symbol CBRE  
Entity Registrant Name CBRE GROUP, INC.  
Entity Central Index Key 0001138118  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   334,751,698
Entity Shell Company false  
Entity Current Reporting Status Yes  
Entity File Number 001-32205  
Entity Tax Identification Number 94-3391143  
Entity Address, Address Line One 400 South Hope Street  
Entity Address, Address Line Two 25th Floor  
Entity Address, City or Town Los Angeles  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 90071  
City Area Code 213  
Local Phone Number 613-3333  
Entity Interactive Data Current Yes  
Title of 12(b) Security Class A Common Stock, $0.01 par value per share  
Security Exchange Name NYSE  
Entity Incorporation, State or Country Code DE  
Document Quarterly Report true  
Document Transition Report false