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Cover Page
Jun. 24, 2024
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jun. 24, 2024
Entity Registrant Name CenterPoint Energy, Inc.
Entity Incorporation, State or Country Code TX
Entity File Number 1-31447
Entity Tax Identification Number 74-0694415
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
City Area Code (713)
Local Phone Number 207-1111
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0001130310
New York Stock Exchange [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol CNP
Security Exchange Name NYSE
CenterPoint Energy Houston Electric, LLC [Member]  
Document Information [Line Items]  
Entity Registrant Name CenterPoint Energy Houston Electric, LLC
Entity Incorporation, State or Country Code TX
Entity File Number 1-3187
Entity Tax Identification Number 22-3865106
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
City Area Code (713)
Local Phone Number 207-1111
Entity Central Index Key 0000048732
A 6.95 General Mortgage Bonds due [Member] | CenterPoint Energy Houston Electric, LLC [Member] | New York Stock Exchange [Member]  
Document Information [Line Items]  
Title of 12(b) Security 6.95% General Mortgage Bonds due 2033
Security Exchange Name NYSE
No Trading Symbol Flag true