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Related Party Transactions (Houston Electric and CERC) (Tables)
 12 Months Ended
Dec. 31, 2022
Related Party Transactions [Abstract]  
Schedule of Money Pool Investment and Borrowing Houston Electric and CERC participate in a money pool through which they can borrow or invest on a short-term basis. Funding needs are aggregated and external borrowing or investing is based on the net cash position. The net funding requirements of the money pool are expected to be met with borrowings under CenterPoint Energy’s revolving credit facility or the sale of CenterPoint Energy’s commercial paper. 
The table below summarizes money pool activity:
December 31, 2022December 31, 2021
Houston ElectricCERCHouston ElectricCERC
 (in millions, except interest rates)
Money pool investments (borrowings) (1)
$(642)$— $(512)$(224)
Weighted average interest rate
4.75 %4.75 %0.34 %0.34 %

(1)Included in Accounts and notes receivable (payable)–affiliated companies in Houston Electric’s and CERC’s Consolidated Balance Sheets.
Schedule of Related Party Transactions
Houston Electric and CERC affiliate-related net interest income (expense) were as follows:
Year Ended December 31,
202220212020
Houston ElectricCERCHouston Electric
CERC (1)
Houston Electric
CERC (1)
(in millions)
Interest income (expense), net (2)
$— $(18)$— $(38)$— $(35)

(1)Includes affiliate-related net interest expense of Indiana Gas and VEDO to reflect the Restructuring.
(2)Interest income is included in Other, net and interest expense is included in Interest and other finance charges on Houston Electric’s and CERC’s respective Statements of Consolidated Income.
Amounts charged for these services are included primarily in Operation and maintenance expenses:
Year Ended December 31,
202220212020
Houston ElectricCERCHouston ElectricCERCHouston ElectricCERC
(in millions)
Corporate service charges$167 $237 $189 $257 $197 $232 
Net affiliate service charges (billings)
15 (15)(7)7 (16)16 
The table below presents transactions among Houston Electric, CERC and their parent, Utility Holding.
Year Ended December 31,
202220212020
Houston ElectricCERCHouston ElectricCERCHouston ElectricCERC
(in millions)
Cash dividends paid to parent$316 $124 $— $— $551 $128 
Cash dividend paid to parent related to the sale of the Arkansas and Oklahoma Natural Gas businesses— 720 — — — — 
Cash contribution from parent 1,143 289 130 140 62 337 
Net assets acquired in the Restructuring (1)
— 2,345 — — — — 
Capital distribution to parent associated with the sale of CES— — — — — 286 
Non-cash capital contribution from parent in payment for property, plant and equipment below38 54 — — — — 
Cash paid to parent for property, plant and equipment below65 61 — — — — 
Property, plant and equipment from parent (2)
103 115 — — 36 23 

(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 is not reflected during the current period on CERC’s Condensed 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.