XML 8 R1.htm IDEA: XBRL DOCUMENT v3.24.0.1
Cover
Mar. 08, 2024
Entity Information [Line Items]  
Entity Incorporation, State or Country Code TX
Entity File Number 1-31447
Entity Tax Identification Number 74-0694415
Entity Emerging Growth Company false
Entity Registrant Name CENTERPOINT ENERGY INC
Amendment Flag false
Entity Central Index Key 0001130310
Entity Address, Address Line One 1111 Louisiana
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77002
Local Phone Number 207-1111
City Area Code (713)
Document Type 8-K
Document Period End Date Mar. 08, 2024
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Common Stock | NEW YORK STOCK EXCHANGE, INC.  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol CNP
Security Exchange Name NYSE
Common Stock | NYSE CHICAGO, INC.  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol CNP
Security Exchange Name CHX