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Cover
Mar. 31, 2025
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Mar. 31, 2025
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
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
Common Stock [Member] | Chicago Stock Exchange [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol CNP
Center Point Energy Resources Corp [Member]  
Document Information [Line Items]  
Entity Registrant Name CenterPoint Energy Resources Corp.
Entity Incorporation, State or Country Code DE
Entity File Number 1-13265
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
Amendment Flag false
Entity Central Index Key 0001042773
Center Point Energy Resources Corp [Member] | Senior Notes due [Member] | New York Stock Exchange [Member]  
Document Information [Line Items]  
Title of 12(b) Security 6.625% Senior Notes due 2037
Security Exchange Name NYSE
No Trading Symbol Flag true