Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
OPERATING ACTIVITIES
NET INCOME	$ 361	$ 192
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	261	251
Deferred income taxes	195	(87)
Rate case amortization and accruals	32	10
Common equity component of allowance for funds used during construction	(1)	(1)
Net derivative gains	(20)	(45)
Other non-cash items (net)	4	192
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers, less allowance for uncollectibles	(315)	(135)
Special deposits	324	(438)
Materials and supplies, including fuel oil and gas in storage	60	60
Other receivables and other current assets	8	85
Prepayments	(353)	(263)
Accounts payable	113	(84)
Pensions and retiree benefits obligations	193	250
Pensions and retiree benefits contributions	(200)	(235)
Accrued taxes	(378)	(18)
Accrued interest	(39)	174
Superfund and environmental remediation costs (net)	9
Deferred charges, noncurrent assets and other regulatory assets	(103)	12
Deferred credits and other regulatory liabilities	86	(5)
Other assets	27	10
Other liabilities	(40)	(9)
NET CASH FLOWS FROM/(USED IN) OPERATING ACTIVITIES	224	(84)
INVESTING ACTIVITIES
Utility construction expenditures	(498)	(538)
Cost of removal less salvage	(47)	(47)
Non-utility construction expenditures	(61)	(91)
Investments in solar energy projects	(80)
Proceeds from grants related to solar energy projects	36	13
Increase in restricted cash	16
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(634)	(663)
FINANCING ACTIVITIES
Net proceeds of short-term debt	(621)	482
Issuance of long-term debt	850	700
Retirement of long-term debt	(200)	(509)
Debt issuance costs	(6)	(7)
Common stock dividends	(184)	(180)
Issuance of common shares for stock plans, net of repurchases	(1)	(1)
NET CASH FLOWS FROM/(USED IN) FINANCING ACTIVITIES	(162)	485
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(572)	(262)
BALANCE AT BEGINNING OF PERIOD	674	394
BALANCE AT END OF PERIOD	102	132
Cash paid during the period for:
Interest	91	90
Income taxes	416	24
CECONY [Member]
OPERATING ACTIVITIES
NET INCOME	334	277
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	240	233
Deferred income taxes	178	241
Rate case amortization and accruals	32	10
Common equity component of allowance for funds used during construction	(1)
Other non-cash items (net)	2	(10)
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers, less allowance for uncollectibles	(265)	(102)
Materials and supplies, including fuel oil and gas in storage	46	49
Other receivables and other current assets	(49)	(15)
Prepayments	(295)	(310)
Accounts payable	12	(58)
Pensions and retiree benefits obligations	184	239
Pensions and retiree benefits contributions	(200)	(235)
Accrued taxes	(214)	(79)
Accrued interest	40	46
Superfund and environmental remediation costs (net)	9
Deferred charges, noncurrent assets and other regulatory assets	(115)	39
Deferred credits and other regulatory liabilities	105	(14)
Other liabilities	(32)	39
NET CASH FLOWS FROM/(USED IN) OPERATING ACTIVITIES	11	350
INVESTING ACTIVITIES
Utility construction expenditures	(464)	(515)
Cost of removal less salvage	(46)	(47)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(510)	(562)
FINANCING ACTIVITIES
Net proceeds of short-term debt	(541)	(108)
Issuance of long-term debt	850	700
Retirement of long-term debt	(200)	(505)
Debt issuance costs	(6)	(7)
Dividend to parent	(178)	(182)
NET CASH FLOWS FROM/(USED IN) FINANCING ACTIVITIES	(75)	(102)
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(574)	(314)
BALANCE AT BEGINNING OF PERIOD	633	353
BALANCE AT END OF PERIOD	59	39
Cash paid during the period for:
Interest	85	84
Income taxes	$ 276	$ 45