v3.26.1
Cover
Sep. 09, 2026
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 09, 2026
Entity File Number 1-31447
Entity Registrant Name CenterPoint Energy, Inc.
Entity Central Index Key 0001130310
Entity Tax Identification Number 74-0694415
Entity Incorporation, State or Country Code TX
Entity Address, Address Line One 1111 Louisiana Street
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
Common Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol CNP
Security Exchange Name NYSE
Center Point Energy Houston Electric L L C [Member]  
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 09, 2026
Entity File Number 1-3187
Entity Registrant Name CenterPoint Energy Houston Electric, LLC
Entity Central Index Key 0000048732
Entity Tax Identification Number 22-3865106
Entity Incorporation, State or Country Code TX
Entity Address, Address Line One 1111 Louisiana Street
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
Center Point Energy Houston Electric L L C [Member] | Percent 695 General Mortgage Bondsdue 2033 [Member]  
Document Information [Line Items]  
Title of 12(b) Security 6.95% General Mortgage Bonds due 2033
Trading Symbol true
Security Exchange Name NYSE
CenterPoint Energy Resources Corp. [Member]  
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 09, 2026
Entity File Number 1-3265
Entity Registrant Name CenterPoint Energy Resources Corp.
Entity Central Index Key 0001042773
Entity Tax Identification Number 76-0511406
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 1111 Louisiana Street
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
CenterPoint Energy Resources Corp. [Member] | 6.625% Senior Notes due 2037 [Member]  
Document Information [Line Items]  
Title of 12(b) Security 6.625% Senior Notes due 2037
Trading Symbol true
Security Exchange Name NYSE