STATEMENTS OF CONSOLIDATED CASH FLOWS - CERC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities:
Net income (loss)	$ 1,057	$ 1,486	$ (773)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,288	1,316	1,189
Deferred income taxes	20	213	(429)
Goodwill impairment and loss from reclassification to held for sale	0	0	175
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	(461)	(98)	90
Inventory	(259)	(140)	9
Taxes receivable	(19)	81	24
Accounts payable	203	175	2
Net regulatory assets and liabilities	234	(2,295)	(107)
Other operating activities, net	79	85	35
Net cash provided by operating activities	1,810	22	1,995
Cash Flows from Investing Activities:
Capital expenditures	(4,419)	(3,164)	(2,596)
Proceeds from divestitures (Note 4)	2,075	22	1,215
Other investing activities, net	14	15	36
Net cash used in investing activities	(1,628)	(1,851)	(1,265)
Cash Flows from Financing Activities:
Proceeds from (payments of) commercial paper, net	(74)	1,132	(761)
Proceeds from long-term debt	2,089	4,493	799
Payments of long-term debt, including make-whole premiums	(1,795)	(2,968)	(1,724)
Other financing activities, net	(7)	(5)	(6)
Net cash provided by (used in) financing activities	(345)	1,916	(834)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(163)	87	(104)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	254	167	271
Cash, Cash Equivalents and Restricted Cash at End of Year	91	254	167
CERC Corp
Cash Flows from Operating Activities:
Net income (loss)	725	390	199
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	448	483	441
Deferred income taxes	178	101	113
Goodwill impairment and loss from reclassification to held for sale	0	0	93
Gain on divestitures	(557)	(11)	0
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	(376)	(68)	104
Accounts receivable/payable–affiliated companies	41	27	0
Inventory	(50)	(62)	64
Taxes receivable	0	(28)	0
Accounts payable	190	95	(40)
Net regulatory assets and liabilities	244	(2,095)	(78)
Other current assets and liabilities	13	(39)	33
Other non-current assets and liabilities	(2)	(31)	56
Other operating activities, net	2	19	5
Net cash provided by operating activities	856	(1,219)	990
Cash Flows from Investing Activities:
Capital expenditures	(1,661)	(1,324)	(1,146)
Increase in notes receivable–affiliated companies	0	0	(9)
Proceeds from divestitures (Note 4)	2,075	22	365
Other investing activities, net	(8)	15	20
Net cash used in investing activities	406	(1,287)	(770)
Cash Flows from Financing Activities:
Increase (decrease) in short-term borrowings, net	452	(27)	0
Proceeds from (payments of) commercial paper, net	(94)	552	(30)
Proceeds from long-term debt	927	1,699	500
Payments of long-term debt, including make-whole premiums	(475)	(311)	(593)
Payment of debt issuance costs	(14)	(10)	(4)
Dividend to parent	(844)	(17)	(128)
Contribution from parent	289	140	337
Capital distribution to parent associated with the sale of CES	0	0	(286)
Increase in notes payable–affiliated companies	(1,517)	490	(18)
Other financing activities, net	(1)	(1)	(1)
Net cash provided by (used in) financing activities	(1,277)	2,515	(223)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(15)	9	(3)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	15	6	9
Cash, Cash Equivalents and Restricted Cash at End of Year	$ 0	$ 15	$ 6