STATEMENTS OF CONSOLIDATED CASH FLOWS - HOUSTON ELECTRIC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ 917	$ 1,057	$ 1,486
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,401	1,288	1,316
Deferred income taxes	31	20	213
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	423	(461)	(98)
Inventory	167	(259)	(140)
Accounts payable	(302)	203	175
Taxes receivable	(74)	(19)	81
Net regulatory assets and liabilities	1,043	234	(2,295)
Other operating activities, net	60	79	85
Net cash provided by operating activities	3,877	1,810	22
Cash Flows from Investing Activities:
Capital expenditures	(4,401)	(4,419)	(3,164)
Other investing activities, net	24	14	15
Net cash used in investing activities	(4,233)	(1,628)	(1,851)
Cash Flows from Financing Activities:
Proceeds from long-term debt and term loans	6,044	2,089	4,493
Payments of long-term debt and term loans, including make-whole premiums	(3,190)	(1,795)	(2,968)
Payment of obligation for finance lease	0	(485)	(179)
Other financing activities, net	(25)	(7)	(5)
Net cash provided by (used in) financing activities	374	(345)	1,916
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	18	(163)	87
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	91	254	167
Cash, Cash Equivalents and Restricted Cash at End of Year	109	91	254
Houston Electric
Cash Flows from Operating Activities:
Net income (loss)	593	510	381
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	748	670	642
Deferred income taxes	160	86	32
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	16	(63)	(17)
Accounts receivable/payable–affiliated companies	(1)	47	(36)
Inventory	62	(179)	(97)
Accounts payable	(60)	(7)	66
Taxes receivable	(38)	0	0
Net regulatory assets and liabilities	(130)	(41)	(237)
Other current assets and liabilities	28	(20)	39
Other non-current assets and liabilities	35	(25)	6
Other operating activities, net	(12)	(12)	(9)
Net cash provided by operating activities	1,401	966	770
Cash Flows from Investing Activities:
Capital expenditures	(2,279)	(2,436)	(1,619)
Increase in notes receivable–affiliated companies	(238)	0	0
Other investing activities, net	14	1	2
Net cash used in investing activities	(2,503)	(2,435)	(1,617)
Cash Flows from Financing Activities:
Proceeds from long-term debt and term loans	1,398	1,589	1,096
Payments of long-term debt and term loans, including make-whole premiums	(156)	(720)	(613)
Dividend to parent	(367)	(316)	0
Increase (decrease) in notes payable–affiliated companies	(642)	130	504
Payment of debt issuance costs	(13)	(17)	(12)
Contribution from parent	885	1,143	130
Payment of obligation for finance lease	0	(485)	(179)
Other financing activities, net	(2)	0	0
Net cash provided by (used in) financing activities	1,103	1,324	926
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	1	(145)	79
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	88	233	154
Cash, Cash Equivalents and Restricted Cash at End of Year	$ 89	$ 88	$ 233