Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
OPERATING ACTIVITIES
NET INCOME	$ 574	$ 364
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	526	506
Deferred income taxes	162	(134)
Rate case amortization and accruals	55	19
Common equity component of allowance for funds used during construction	(3)	(1)
Net derivative gains	(15)	30
Pre-tax gain on termination of a LILO transaction	0	(49)
Pre-tax gain on sale of solar energy projects	(45)
Other non-cash items (net)	(6)	46
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers, less allowance for uncollectibles	24	11
Special deposits	312	(335)
Materials and supplies, including fuel oil and gas in storage	40	9
Other receivables and other current assets	2	2
Prepayments	(11)	40
Accounts payable	21	(121)
Pensions and retiree benefits obligations	411	467
Pensions and retiree benefits contributions	(413)	(361)
Accrued taxes	(407)	160
Accrued interest	(76)	124
Superfund and environmental remediation costs (net)	16	(6)
Deferred charges, noncurrent assets and other regulatory assets	(16)	(34)
Deferred credits and other regulatory liabilities	154	79
Other assets	(9)	66
Other liabilities	(39)	(17)
NET CASH FLOWS FROM OPERATING ACTIVITIES	1,257	865
INVESTING ACTIVITIES
Utility construction expenditures	(1,073)	(1,114)
Cost of removal less salvage	(99)	(93)
Non-utility construction expenditures	(113)	(129)
Investments in solar energy projects	(107)	(2)
Proceeds from grants related to solar energy projects	36	18
Proceeds from sale of solar energy projects	108
Decrease in restricted cash	15
Proceeds from the termination of a LILO transaction	0	108
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(1,233)	(1,212)
FINANCING ACTIVITIES
Net issuance of short-term debt	80	861
Issuance of long-term debt	850	919
Retirement of long-term debt	(478)	(706)
Debt issuance costs	(6)	(12)
Common stock dividends	(368)	(360)
Issuance of common shares for stock plans, net of repurchases	(2)	(2)
NET CASH FLOWS FROM FINANCING ACTIVITIES	76	700
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	100	353
BALANCE AT BEGINNING OF PERIOD	674	394
BALANCE AT END OF PERIOD	774	747
Cash paid during the period for:
Interest	277	281
Income taxes	518	27
CECONY [Member]
OPERATING ACTIVITIES
NET INCOME	506	430
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	486	468
Deferred income taxes	135	191
Rate case amortization and accruals	55	19
Common equity component of allowance for funds used during construction	(2)	(1)
Other non-cash items (net)	(17)	(25)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers, less allowance for uncollectibles	44	22
Materials and supplies, including fuel oil and gas in storage	37	2
Other receivables and other current assets	(93)	18
Prepayments	13	(8)
Accounts payable	(71)	(119)
Pensions and retiree benefits obligations	390	435
Pensions and retiree benefits contributions	(413)	(361)
Accrued taxes	(240)	(114)
Accrued interest	12	4
Superfund and environmental remediation costs (net)	17	(4)
Deferred charges, noncurrent assets and other regulatory assets	(86)	(11)
Deferred credits and other regulatory liabilities	142	68
Other liabilities	(33)	29
NET CASH FLOWS FROM OPERATING ACTIVITIES	882	1,043
INVESTING ACTIVITIES
Utility construction expenditures	(1,007)	(1,062)
Cost of removal less salvage	(97)	(89)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(1,104)	(1,151)
FINANCING ACTIVITIES
Net issuance of short-term debt	272	809
Issuance of long-term debt	850	700
Retirement of long-term debt	(475)	(700)
Debt issuance costs	(6)	(7)
Dividend to parent	(356)	(364)
NET CASH FLOWS FROM FINANCING ACTIVITIES	285	438
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	63	330
BALANCE AT BEGINNING OF PERIOD	633	353
BALANCE AT END OF PERIOD	696	683
Cash paid during the period for:
Interest	248	251
Income taxes	$ 392	$ 104