Consolidated Statement of Cash Flows - CECONY - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING ACTIVITIES
Net income for common stock	$ 1,820	$ 2,519	$ 1,660
PRINCIPAL NON-CASH CHARGES (CREDITS) TO INCOME
Depreciation and amortization	2,155	2,031	2,056
Deferred income taxes	416	132	435
Rate case amortization and accruals	201	92	73
Other non-cash items, net	(85)	(93)	102
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable	(263)	(275)	(296)
Materials and supplies, including fuel oil and gas in storage	(16)	38	(111)
Revenue decoupling mechanism receivable	0	(39)	26
Other receivables, net and other current assets	87	141	(36)
Unbilled revenue and net unbilled revenue deferrals	75	(48)	(96)
Prepayments	25	(200)	26
Accounts payable	(1)	(285)	558
Pensions and retiree benefits obligations, net	(284)	(179)	155
Pensions and retiree benefits contributions	(26)	(33)	(39)
Superfund and environmental remediation costs, net	(43)	(12)	(22)
Accrued taxes	(5)	(13)	7
Accrued interest	28	(7)	42
Deferred charges, noncurrent assets, leases, net and other regulatory assets	(797)	(1,200)	(833)
Deferred credits, noncurrent liabilities and other regulatory liabilities	475	196	445
Other current liabilities	(101)	213	1
NET CASH FLOWS FROM OPERATING ACTIVITIES	3,614	2,156	3,935
INVESTING ACTIVITIES
Utility capital expenditures	(4,770)	(4,353)	(3,824)
Cost of removal less salvage	(474)	(387)	(337)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(5,273)	(1,003)	(4,565)
FINANCING ACTIVITIES
Net issuance (payment) of short-term debt	(118)	(202)	1,152
Issuance of long-term debt	2,975	2,050	800
Retirement of long-term debt	(477)	(710)	(406)
Debt issuance costs	(43)	(32)	(13)
NET CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES	1,797	(1,488)	1,014
CASH, TEMPORARY CASH INVESTMENTS, AND RESTRICTED CASH:
NET CHANGE FOR THE PERIOD	138	(335)	384
BALANCE AT BEGINNING OF PERIOD	1,195	1,530	1,146
BALANCE AT END OF PERIOD	1,333	1,195	1,530
Cash paid during the period for:
Interest, net of capitalized interest	1,072	987	900
Income taxes	7	397	47
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures in accounts payable	501	598	681
CECONY
OPERATING ACTIVITIES
Net income for common stock	1,748	1,606	1,390
PRINCIPAL NON-CASH CHARGES (CREDITS) TO INCOME
Depreciation and amortization	2,037	1,924	1,778
Deferred income taxes	464	556	85
Rate case amortization and accruals	179	72	55
Other non-cash items, net	(27)	(42)	160
CHANGES IN ASSETS AND LIABILITIES
Materials and supplies, including fuel oil and gas in storage	(7)	18	(71)
Revenue decoupling mechanism receivable	13	(26)	27
Other receivables, net and other current assets	86	(134)	99
Unbilled revenue and net unbilled revenue deferrals	64	(47)	(28)
Prepayments	(66)	(106)	(11)
Accounts payable	8	(137)	322
Accounts payable from (to) affiliated companies	6	(1)	(1)
Pensions and retiree benefits obligations, net	(283)	(181)	162
Pensions and retiree benefits contributions	(26)	(33)	(26)
Superfund and environmental remediation costs, net	(43)	(12)	(20)
Accrued interest	26	25	7
Deferred charges, noncurrent assets, leases, net and other regulatory assets	(677)	(1,142)	(814)
Deferred credits, noncurrent liabilities and other regulatory liabilities	447	199	332
Other current liabilities	(99)	239	7
NET CASH FLOWS FROM OPERATING ACTIVITIES	3,358	2,285	3,263
INVESTING ACTIVITIES
Utility capital expenditures	(4,456)	(4,059)	(3,596)
Cost of removal less salvage	(467)	(380)	(330)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(4,923)	(4,439)	(3,926)
FINANCING ACTIVITIES
Net issuance (payment) of short-term debt	(209)	(397)	939
Issuance of term loan	500	0	0
Issuance of long-term debt	2,850	2,000	700
Retirement of long-term debt	(475)	0	0
Debt issuance costs	(42)	(31)	(12)
Capital contribution by Con Edison	130	1,720	150
Dividend to Con Edison	(1,073)	(1,056)	(978)
NET CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES	1,681	2,236	799
CASH, TEMPORARY CASH INVESTMENTS, AND RESTRICTED CASH:
NET CHANGE FOR THE PERIOD	116	82	136
BALANCE AT BEGINNING OF PERIOD	1,138	1,056	920
BALANCE AT END OF PERIOD	1,254	1,138	1,056
Cash paid during the period for:
Interest, net of capitalized interest	1,001	882	755
Income taxes	63	(27)	87
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures in accounts payable	461	564	561
CECONY | Nonrelated Party
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable	(264)	(270)	(276)
Accrued taxes	10	(35)	15
CECONY | Related Party
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable	(238)	(100)	(8)
Accrued taxes	0	(88)	79
Software Licenses
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	0	0	2
Software Licenses | CECONY
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	0	0	2
Equipment
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	6	11	17
Equipment | CECONY
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Capital expenditures incurred but unpaid as of end of period	$ 6	$ 11	$ 17