Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES
Net income	$ 1,020	$ 1,039
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	998	905
Deferred income taxes	626	524
Rate case amortization and accruals	(93)	(157)
Common equity component of allowance for funds used during construction	(8)	(7)
Net derivative gains	(4)	(7)
Gain on sale of retail electric supply business and solar electric production project	(1)	(104)
Other non-cash items, net	(1)	99
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	1	(138)
Materials and supplies, including fuel oil and gas in storage	2	15
Other receivables and other current assets	(39)	90
Income taxes receivable	33	100
Prepayments	(433)	(403)
Accounts payable	(54)	142
Pensions and retiree benefits obligations, net	305	464
Pensions and retiree benefits contributions	(462)	(510)
Accrued taxes	(21)	(21)
Accrued interest	59	66
Superfund and environmental remediation costs, net	(9)	68
Distributions from equity investments	87	45
System benefit charge	194	193
Deferred charges, noncurrent assets and other regulatory assets	(18)	(104)
Deferred credits and other regulatory liabilities	(40)	116
Other current and noncurrent liabilities	85	(79)
NET CASH FLOWS FROM OPERATING ACTIVITIES	2,227	2,336
INVESTING ACTIVITIES
Utility construction expenditures	(2,148)	(2,057)
Cost of removal less salvage	(185)	(149)
Non-utility construction expenditures	(288)	(436)
Proceeds from the transfer of assets to NY Transco	0	122
Proceeds from sale of assets	34	250
Restricted cash	13	(21)
Other investing activities	32	(145)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(2,572)	(3,717)
FINANCING ACTIVITIES
Net payment of short-term debt	(698)	(928)
Issuance of long-term debt	997	1,765
Retirement of long-term debt	(429)	(407)
Debt issuance costs	(12)	(16)
Common stock dividends	(600)	(570)
Issuance of common shares - public offering	343	702
Issuance of common shares for stock plans	37	38
Distribution to noncontrolling interest	0	(1)
NET CASH FLOWS (USED IN)/FROM FINANCING ACTIVITIES	(362)	583
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(707)	(798)
BALANCE AT BEGINNING OF PERIOD	776	944
BALANCE AT END OF PERIOD	69	146
LESS: CHANGE IN CASH BALANCES HELD FOR SALE	0	(4)
BALANCE AT END OF PERIOD EXCLUDING HELD FOR SALE	69	150
Cash paid/(received) during the period for:
Interest	479	437
Income taxes	(34)	(144)
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	352	242
Issuance of common shares for dividend reinvestment	35	35
Electric and Gas Transmission Projects
INVESTING ACTIVITIES
Investments in/acquisitions of projects	(29)	(1,040)
Renewable Electric Production Projects
INVESTING ACTIVITIES
Investments in/acquisitions of projects	(1)	(241)
CECONY
OPERATING ACTIVITIES
Net income	883	859
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME
Depreciation and amortization	891	825
Deferred income taxes	566	569
Rate case amortization and accruals	(107)	(170)
Common equity component of allowance for funds used during construction	(7)	(6)
Other non-cash items, net	(14)	7
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable – customers	18	(79)
Materials and supplies, including fuel oil and gas in storage	(18)	15
Other receivables and other current assets	29	18
Accounts receivable from affiliated companies	12	38
Prepayments	(398)	(351)
Accounts payable	(20)	82
Accounts payable to affiliated companies	1	8
Pensions and retiree benefits obligations, net	274	439
Pensions and retiree benefits contributions	(416)	(472)
Accrued taxes	(18)	(17)
Accrued interest	61	43
Superfund and environmental remediation costs, net	(7)	76
System benefit charge	175	176
Accrued taxes to affiliated companies	(119)	(2)
Deferred charges, noncurrent assets and other regulatory assets	(60)	(153)
Deferred credits and other regulatory liabilities	77	165
Other current and noncurrent liabilities	(13)	(53)
NET CASH FLOWS FROM OPERATING ACTIVITIES	1,790	2,017
INVESTING ACTIVITIES
Utility construction expenditures	(2,020)	(1,932)
Cost of removal less salvage	(179)	(146)
Proceeds from the transfer of assets to NY Transco	0	122
Restricted cash	2	13
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(2,197)	(1,943)
FINANCING ACTIVITIES
Net payment of short-term debt	(453)	(553)
Issuance of long-term debt	500	550
Retirement of long-term debt	0	(400)
Debt issuance costs	(7)	(6)
Capital contribution by parent	279	76
Dividend to parent	(597)	(558)
NET CASH FLOWS (USED IN)/FROM FINANCING ACTIVITIES	(278)	(891)
CASH AND TEMPORARY CASH INVESTMENTS:
NET CHANGE FOR THE PERIOD	(685)	(817)
BALANCE AT BEGINNING OF PERIOD	702	843
BALANCE AT END OF PERIOD	17	26
BALANCE AT END OF PERIOD EXCLUDING HELD FOR SALE	17
Cash paid/(received) during the period for:
Interest	388	386
Income taxes	96	(130)
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION
Construction expenditures in accounts payable	$ 240	$ 195