XML 8 R1.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Document and Entity Information
Apr. 21, 2024
Cover [Abstract]  
Document Type 8-K
Document Period End Date Apr. 21, 2024
Entity Registrant Name COSTAR GROUP, INC.
Entity Incorporation State Country Code DE
Entity File Number 0-24531
Entity Tax Identification Number 52-2091509
Entity Address Address Line 1 1331 L Street, NW
Entity Address City Or Town Washington
Entity Address State Or Province DC
Entity Address Postal Zip Code 20005
City Area Code 202
Local Phone Number 346-6500
Written Communications true
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock ($0.01 par value)
Trading Symbol CSGP
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001057352
Amendment Flag false