CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATING ACTIVITIES
NET INCOME	$ 192	$ 280
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	251	233
Deferred income taxes	(87)	68
Rate case amortization and accruals	10	31
Common equity component of allowance for funds used during construction	(1)
Net derivative (gains)/losses	(45)	31
Other non-cash items (net)	147	64
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers, less allowance for uncollectibles	(135)	54
Special deposits	(438)
Materials and supplies, including fuel oil and gas in storage	60	31
Other receivables and other current assets	85	(2)
Prepayments	(263)	(286)
Accounts payable	(84)	(78)
Pensions and retiree benefits obligations	270	253
Pensions and retiree benefits contributions	(235)	(184)
Accrued taxes	(18)	41
Accrued interest	174	52
Deferred charges, noncurrent assets and other regulatory assets	37	(255)
Deferred credits and other regulatory liabilities	(5)	117
Other assets	10
Other liabilities	(9)	(48)
NET CASH FLOWS (USED IN)/FROM OPERATING ACTIVITIES	(84)	402
INVESTING ACTIVITIES
Utility construction expenditures	(538)	(471)
Cost of removal less salvage	(47)	(43)
Non-utility construction expenditures	(91)	(9)
Proceeds from grants related to renewable energy investments	13	6
Net investment in Pilesgrove solar project and other		27
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(663)	(490)
FINANCING ACTIVITIES
Net proceeds of short-term debt	482
Issuance of long-term debt	700	400
Retirement of long-term debt	(509)	(1)
Issuance of common shares for stock plans, net of repurchases	(1)	(8)
Debt issuance costs	(7)	(4)
Common stock dividends	(180)	(175)
Preferred stock dividends		(3)
NET CASH FLOWS FROM FINANCING ACTIVITIES	485	209
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(262)	121
BALANCE AT BEGINNING OF PERIOD	394	648
BALANCE AT END OF PERIOD	132	769
Cash paid/(refunded) during the period for:
Interest	90	89
Income taxes	24
CECONY [Member]
OPERATING ACTIVITIES
NET INCOME	277	276
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	233	218
Deferred income taxes	241	66
Rate case amortization and accruals	10	31
Other non-cash items (net)	(10)	15
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable - customers, less allowance for uncollectibles	(102)	43
Materials and supplies, including fuel oil and gas in storage	49	22
Other receivables and other current assets	(15)	16
Prepayments	(310)	(287)
Accounts payable	(58)	(48)
Pensions and retiree benefits obligations	250	209
Pensions and retiree benefits contributions	(235)	(184)
Superfund and environmental remediation costs (net)		(1)
Accrued taxes	(79)	57
Accrued interest	46	42
Deferred charges, noncurrent assets and other regulatory assets	28	(179)
Deferred credits and other regulatory liabilities	(14)	108
Other liabilities	39	(36)
NET CASH FLOWS (USED IN)/FROM OPERATING ACTIVITIES	350	368
INVESTING ACTIVITIES
Utility construction expenditures	(515)	(446)
Cost of removal less salvage	(47)	(41)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(562)	(487)
FINANCING ACTIVITIES
Net payments of short-term debt	(108)
Issuance of long-term debt	700	400
Retirement of long-term debt	(505)
Debt issuance costs	(7)	(4)
Dividend to parent	(182)	(171)
Preferred stock dividends		(3)
NET CASH FLOWS FROM FINANCING ACTIVITIES	(102)	222
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(314)	103
BALANCE AT BEGINNING OF PERIOD	353	372
BALANCE AT END OF PERIOD	39	475
Cash paid/(refunded) during the period for:
Interest	84	83
Income taxes	$ 45	$ (20)