| Submission | Oct. 29, 2024 |
| Submission [Line Items] | |
| Central Index Key | 0001130310 |
| Registrant Name | CENTERPOINT ENERGY INC |
| Registration File Number | 333-272025 |
| Form Type | S-3 |
| Submission Type | 424B2 |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings - Offering: 1 | Oct. 29, 2024 USD ($) shares |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | 6.700% Fixed-to-Fixed Reset Rate Junior Subordinated Notes, Series C, due 2055 |
| Amount Registered | shares | 500,000,000 |
| Proposed Maximum Offering Price per Unit | 1 |
| Maximum Aggregate Offering Price | $ 500,000,000 |
| Fee Rate | 0.01531% |
| Amount of Registration Fee | $ 76,550 |
| Offering Note | (1) This registration fee table shall be deemed to update the “Calculation of Registration Fee” in the Company’s Registration Statement on Form S-3 (File No. 333-272025) in |
| Fees Summary | Oct. 29, 2024 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 500,000,000 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 76,550 |
| Net Fee | $ 76,550 |
