Consolidated Statement of Cash Flows - CECONY - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES
Net income	$ 1,660	$ 1,346	$ 1,101
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	2,056	2,032	1,920
Deferred income taxes	435	133	85
Other non-cash items, net	163	111	(8)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers	(285)	(411)	(543)
Reserve adjustments	5	169	78
Prepayments, other receivables and other current assets	31	(234)	(179)
Accounts payable	558	44	170
Pensions and retiree benefits obligations, net	176	266	285
Pensions and retiree benefits contributions	(39)	(472)	(478)
Accrued taxes	7	(46)	74
System benefit charge	(41)	(34)	(119)
Deferred charges, noncurrent assets, leases, net and other regulatory assets	(870)	(496)	(686)
Deferred credits, noncurrent liabilities and other regulatory liabilities	423	248	(58)
Other current liabilities	84	(43)	102
NET CASH FLOWS FROM OPERATING ACTIVITIES	3,935	2,733	2,198
INVESTING ACTIVITIES
Utility construction expenditures	(3,824)	(3,630)	(3,326)
Cost of removal less salvage	(337)	(323)	(310)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(4,565)	(3,484)	(4,224)
FINANCING ACTIVITIES
Net (payment)/issuance of short-term debt	1,702	(382)	178
Issuance of long-term debt	800	2,804	2,925
Retirement of long-term debt	(406)	(1,960)	(518)
Debt issuance costs	(13)	(40)	(47)
NET CASH FLOWS FROM FINANCING ACTIVITIES	1,014	461	2,245
CASH, TEMPORARY CASH INVESTMENTS AND RESTRICTED CASH:
NET CHANGE FOR THE PERIOD	384	(290)	219
BALANCE AT BEGINNING OF PERIOD	1,146	1,436	1,217
BALANCE AT END OF PERIOD	1,530	1,146	1,436
Cash paid/(received) during the period for:
Interest	900	924	920
Income taxes	47	9	38
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	681	457	478
CECONY
OPERATING ACTIVITIES
Net income	1,390	1,344	1,185
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	1,778	1,705	1,598
Deferred income taxes	85	124	168
Other non-cash items, net	175	(2)	(62)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers	(268)	(412)	(516)
Reserve adjustments	10	166	74
Prepayments, other receivables and other current assets	56	(354)	(98)
Accounts receivables from affiliated companies	(8)	96	(61)
Accounts payable	322	65	145
Accounts payable to affiliated companies	(1)	(4)	9
Pensions and retiree benefits obligations, net	182	283	253
Pensions and retiree benefits contributions	(26)	(433)	(438)
Accrued taxes	15	(54)	61
Accrued taxes to affiliated companies	79	9	1
System benefit charge	(33)	(32)	(112)
Deferred charges, noncurrent assets, leases, net and other regulatory assets	(852)	(484)	(633)
Deferred credits, noncurrent liabilities and other regulatory liabilities	312	192	15
Other current liabilities	47	(23)	104
NET CASH FLOWS FROM OPERATING ACTIVITIES	3,263	2,186	1,693
INVESTING ACTIVITIES
Utility construction expenditures	(3,596)	(3,413)	(3,112)
Cost of removal less salvage	(330)	(316)	(304)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(3,926)	(3,729)	(3,416)
FINANCING ACTIVITIES
Net (payment)/issuance of short-term debt	939	(299)	523
Issuance of long-term debt	700	2,250	2,200
Retirement of long-term debt	0	(640)	(350)
Debt issuance costs	(12)	(27)	(34)
Capital contribution by parent	150	1,100	500
Dividend to parent	(978)	(988)	(982)
NET CASH FLOWS FROM FINANCING ACTIVITIES	799	1,396	1,857
CASH, TEMPORARY CASH INVESTMENTS AND RESTRICTED CASH:
NET CHANGE FOR THE PERIOD	136	(147)	134
BALANCE AT BEGINNING OF PERIOD	920	1,067	933
BALANCE AT END OF PERIOD	1,056	920	1,067
Cash paid/(received) during the period for:
Interest	755	739	693
Income taxes	87	5	102
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	561	406	417
Software Licenses
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	2	23	51
Software Licenses | CECONY
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	2	22	48
Equipment
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	17	22	28
Equipment | CECONY
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	$ 17	$ 22	$ 28