Condensed Statements of Consolidated Cash Flows (Unaudited) - CERC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities:
Net income	$ 725	$ 923
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,042	974
Deferred income taxes	94	26
Loss (gain) on divestitures	12	(303)
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	528	95
Inventory	63	(224)
Accounts payable	(443)	(119)
Net regulatory assets and liabilities	1,102	148
Other current assets and liabilities	(41)	(199)
Other non-current assets and liabilities	59	34
Other operating activities, net	9	72
Net cash provided by operating activities	3,069	1,325
Cash Flows from Investing Activities:
Capital expenditures	(3,323)	(3,079)
Other investing activities, net	(12)	73
Net cash used in investing activities	(3,190)	(229)
Cash Flows from Financing Activities:
Increase (decrease) in short-term borrowings, net	(14)	457
Payments of commercial paper, net	(1,496)	(1,620)
Proceeds from long-term debt and term loans	5,574	2,089
Payments of long-term debt and term loan	(2,613)	(1,519)
Payment of debt issuance costs	(50)	(26)
Other financing activities, net	(25)	(7)
Net cash provided by (used in) financing activities	168	(1,220)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	47	(124)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	91	254
Cash, Cash Equivalents and Restricted Cash at End of Period	138	130
CERC
Cash Flows from Operating Activities:
Net income	283	656
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	365	333
Deferred income taxes	(113)	217
Loss (gain) on divestitures	0	(557)
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	724	271
Accounts receivable/payable–affiliated companies	(57)	(59)
Inventory	90	(87)
Accounts payable	(384)	(117)
Net regulatory assets and liabilities	1,192	181
Other current assets and liabilities	64	(81)
Other non-current assets and liabilities	(5)	(5)
Other operating activities, net	(3)	1
Net cash provided by operating activities	2,270	753
Cash Flows from Investing Activities:
Capital expenditures	(1,219)	(1,166)
Increase in notes receivable–affiliated companies	(86)	0
Proceeds from divestitures, net of cash divested	0	2,075
Other investing activities, net	(15)	12
Net cash used in investing activities	(1,320)	921
Cash Flows from Financing Activities:
Increase (decrease) in short-term borrowings, net	(14)	457
Payments of commercial paper, net	(805)	(324)
Proceeds from long-term debt and term loans	2,006	852
Payments of long-term debt and term loan	(2,275)	(425)
Dividend to parent	(347)	(844)
Payment of debt issuance costs	(13)	(11)
Decrease in notes payable–affiliated companies	0	(1,517)
Contribution from parent	500	125
Other financing activities, net	(1)	(1)
Net cash provided by (used in) financing activities	(949)	(1,688)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	1	(14)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	0	15
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 1	$ 1