Cover Page
| 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 |