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Audit Information
 12 Months Ended
Dec. 31, 2024
Auditor [Line Items]  
Auditor Name DELOITTE & TOUCHE LLP
Auditor Location Houston, Texas
Auditor Firm ID 34
Houston Electric  
Auditor [Line Items]  
Auditor Name DELOITTE & TOUCHE LLP
Auditor Location Houston, Texas
Auditor Firm ID 34
CERC  
Auditor [Line Items]  
Auditor Name DELOITTE & TOUCHE LLP
Auditor Location Houston, Texas
Auditor Firm ID 34