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Related Party Transactions (Houston Electric and CERC) (Tables)
 12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Schedule of Money Pool Activity
The table below summarizes CenterPoint Energy money pool activity for the periods presented:
December 31, 2024December 31, 2023
Houston ElectricCERCHouston ElectricCERC
 (in millions, except interest rates)
Money pool investments (1)
$368 $— $238 $1 
Weighted average interest rate4.65 %— %5.59 %5.59 %

(1)Included in Accounts and notes receivable–affiliated companies in Houston Electric’s and CERC’s respective Consolidated Balance Sheets as of December 31, 2024 and 2023, as applicable.
Schedule of Related Party Transactions
Houston Electric and CERC affiliate-related transactions were as follows:
Year Ended December 31,
202420232022
Houston ElectricCERCHouston ElectricCERC Houston ElectricCERC (1)
(in millions)
Interest income (expense), net (2)$9 $2 $2 $10 $— $(18)

(1)Includes affiliate-related net interest expense of Indiana Gas and CEOH to reflect the Restructuring.
(2)Interest income is included in Other, net and interest expense is included in Interest expense and other finance charges on Houston Electric’s and CERC’s respective Statements of Consolidated Income.
The table below presents amounts charged for these services, which are included primarily in Operation and maintenance expenses on Houston Electric’s and CERC’s respective Statements of Consolidated Income, for the periods presented:
Year Ended December 31,
202420232022
Houston ElectricCERCHouston ElectricCERCHouston ElectricCERC
(in millions)
Corporate service charges$173 $213 $173 $236 $167 $237 
Net affiliate service charges (billings)(5)5 (10)10 15 (15)

The table below presents transactions among Houston Electric, CERC and their parent, Utility Holding, for the periods presented:
Year Ended December 31,
202420232022
Houston ElectricCERCHouston ElectricCERCHouston ElectricCERC
(in millions)
Cash dividends paid to parent$339 $442 $367 $496 $316 $124 
Cash dividend paid to parent related to the sale of the Arkansas and Oklahoma Natural Gas businesses— — — — — 720 
Cash contribution from parent 844 290 885 500 1,143 289 
Net assets acquired in the Restructuring (1)— — — — — 2,345 
Non-cash capital contribution from parent in payment for property, plant and equipment below— — — — 38 54 
Cash paid to parent for property, plant and equipment below— — — — 65 61 
Property, plant and equipment from parent (2)— — — — 103 115 

(1)The Restructuring was a common control transaction that required the recasting of financial information to the earliest period presented. Therefore, the net asset transfer was not reflected during the year ended December 31, 2022 on CERC’s Statements of Consolidated Changes in Equity.
(2)Property, plant and equipment purchased from CenterPoint Energy at its net carrying value on the date of purchase.