CONDENSED STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY (Unaudited) - HOUSTON ELECTRIC - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in-Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Houston Electric	Houston Electric Common Stock	Houston Electric Additional Paid-in-Capital	Houston Electric Retained Earnings	Houston Electric Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2023		631,000,000					1,000
Beginning balance at Dec. 31, 2023		$ 6	$ 8,604	$ 1,092	$ (35)		$ 0	$ 4,745	$ 1,364	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent								324
Net income	$ 771			771		$ 465			465
Dividend to parent									(249)
Ending balance (in shares) at Sep. 30, 2024		652,000,000					1,000
Ending balance at Sep. 30, 2024	10,535	$ 6	9,091	1,468	(30)	6,649	$ 0	5,069	1,580	0
Beginning balance (in shares) at Jun. 30, 2024		642,000,000					1,000
Beginning balance at Jun. 30, 2024		$ 6	8,836	1,542	(30)		$ 0	4,975	1,495	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent								94
Net income	193			193		179			179
Dividend to parent									(94)
Ending balance (in shares) at Sep. 30, 2024		652,000,000					1,000
Ending balance at Sep. 30, 2024	$ 10,535	$ 6	9,091	1,468	(30)	6,649	$ 0	5,069	1,580	0
Beginning balance (in shares) at Dec. 31, 2024	651,727,276	652,000,000					1,000
Beginning balance at Dec. 31, 2024	$ 10,666	$ 6	9,105	1,572	(17)	7,159	$ 0	5,589	1,571	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent								94
Net income	$ 788			788		456			456
Dividend to parent									(182)
Ending balance (in shares) at Sep. 30, 2025	652,865,523	653,000,000					1,000
Ending balance at Sep. 30, 2025	$ 11,035	$ 6	9,119	1,929	(19)	7,527	$ 0	5,683	1,845	(1)
Beginning balance (in shares) at Jun. 30, 2025		653,000,000					1,000
Beginning balance at Jun. 30, 2025		$ 6	9,107	1,923	(17)		$ 0	5,589	1,614	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent								94
Net income	$ 293			293		231			231
Dividend to parent									0
Ending balance (in shares) at Sep. 30, 2025	652,865,523	653,000,000					1,000
Ending balance at Sep. 30, 2025	$ 11,035	$ 6	$ 9,119	$ 1,929	$ (19)	$ 7,527	$ 0	$ 5,683	$ 1,845	$ (1)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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+ Details

CENTERPOINT ENERGY INC 10-Q