Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
OPERATING ACTIVITIES
Net income	$ 388	$ 310
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	329	297
Deferred income taxes	256	174
Rate case amortization and accruals	(31)	(63)
Common equity component of allowance for funds used during construction	(2)	(2)
Net derivative (gains)/losses	(5)	64
Other non-cash items, net	(5)	35
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	(66)	(30)
Materials and supplies, including fuel oil and gas in storage	26	8
Other receivables and other current assets	30	(40)
Income taxes receivable	26	151
Prepayments	(394)	(374)
Accounts payable	(78)	(84)
Pensions and retiree benefits obligations, net	105	139
Pensions and retiree benefits contributions	(129)	(153)
Accrued taxes	(26)	(11)
Accrued interest	54	54
Superfund and environmental remediation costs, net	1	55
Distributions from equity investments	35	24
System benefit charge	65	45
Deferred charges, noncurrent assets and other regulatory assets	(53)	(149)
Deferred credits and other regulatory liabilities	(9)	110
Other current and noncurrent liabilities	(69)	(36)
NET CASH FLOWS FROM OPERATING ACTIVITIES	448	524
INVESTING ACTIVITIES
Utility construction expenditures	(714)	(603)
Cost of removal less salvage	(63)	(44)
Non-utility construction expenditures	(113)	(210)
Proceeds from sale of assets	23	0
Restricted cash	19	(1)
Other investing activities	16	(13)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(837)	(1,118)
FINANCING ACTIVITIES
Net payment of short-term debt	(218)	(330)
Issuance of long-term debt	497	218
Retirement of long-term debt	(408)	(1)
Debt issuance costs	(4)	(3)
Common stock dividends	(199)	(185)
Issuance of common shares for stock plans	12	15
Distribution to noncontrolling interest	0	(1)
NET CASH FLOWS USED IN FINANCING ACTIVITIES	(320)	(287)
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(709)	(881)
BALANCE AT BEGINNING OF PERIOD	776	944
BALANCE AT END OF PERIOD	67	63
LESS: CHANGE IN CASH BALANCES HELD FOR SALE	0	2
BALANCE AT END OF PERIOD EXCLUDING HELD FOR SALE	67	61
Cash paid/(received) during the period for:
Interest	123	109
Income taxes	(39)	(143)
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	282	263
Issuance of common shares for dividend reinvestment	12	12
Electric and Gas Transmission Projects
INVESTING ACTIVITIES
Investments in/acquisitions of projects	(5)	(22)
Renewable Electric Production Projects
INVESTING ACTIVITIES
Investments in/acquisitions of projects	0	(225)
CECONY
OPERATING ACTIVITIES
Net income	339	310
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	294	272
Deferred income taxes	234	236
Rate case amortization and accruals	(36)	(67)
Common equity component of allowance for funds used during construction	(2)	(2)
Other non-cash items, net	(13)	16
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	(54)	(30)
Materials and supplies, including fuel oil and gas in storage	20	18
Other receivables and other current assets	33	13
Accounts receivable from affiliated companies	15	71
Prepayments	(373)	(324)
Accounts payable	(41)	(106)
Pensions and retiree benefits obligations, net	93	132
Pensions and retiree benefits contributions	(128)	(153)
Accrued taxes	(18)	(10)
Accrued interest	56	41
Superfund and environmental remediation costs, net	1	55
System benefit charge	59	41
Accrued taxes to affiliated companies	(21)	(2)
Deferred charges, noncurrent assets and other regulatory assets	(51)	(148)
Deferred credits and other regulatory liabilities	29	111
Other current and noncurrent liabilities	(56)	(16)
NET CASH FLOWS FROM OPERATING ACTIVITIES	380	458
INVESTING ACTIVITIES
Utility construction expenditures	(672)	(565)
Cost of removal less salvage	(61)	(43)
Restricted cash	0	2
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(733)	(606)
FINANCING ACTIVITIES
Net payment of short-term debt	(155)	(513)
Debt issuance costs	0	(1)
Capital contribution by parent	22	23
Dividend to parent	(199)	(186)
NET CASH FLOWS USED IN FINANCING ACTIVITIES	(332)	(677)
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(685)	(825)
BALANCE AT BEGINNING OF PERIOD	702	843
BALANCE AT END OF PERIOD EXCLUDING HELD FOR SALE	17	18
Cash paid/(received) during the period for:
Interest	91	100
Income taxes	(22)	(143)
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	$ 217	$ 210