XML 10 R1.htm IDEA: XBRL DOCUMENT v3.25.3
Cover
Oct. 20, 2025
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Entity Central Index Key 0001130310
Document Period End Date Oct. 20, 2025
Entity Incorporation, State or Country Code TX
Entity File Number 1-31447
Entity Registrant Name CenterPoint Energy, Inc.
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
Common Stock [Member] | 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 Resources Corp. [Member]  
Document Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001042773
Entity Incorporation, State or Country Code DE
Entity File Number 1-13265
Entity Registrant Name CenterPoint Energy Resources Corp.
Entity Tax Identification Number 76-0511406
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
CenterPoint Energy Resources Corp. [Member] | 6.625% Senior Notes due 2037 [Member] | New York Stock Exchange [Member]  
Document Information [Line Items]  
Title of 12(b) Security 6.625% Senior Notes due 2037
No Trading Symbol Flag true
Security Exchange Name NYSE