Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and temporary cash investments	$ 797	$ 776
Accounts receivable - customers, less allowance for uncollectible accounts	1,103	1,106
Other receivables, less allowance for uncollectible accounts	160	195
Taxes receivable	64	79
Accrued unbilled revenue	598	447
Fuel oil, gas in storage, materials and supplies, at average cost	334	339
Prepayments	178	159
Regulatory assets	67	100
Restricted cash	47	54
Other current assets	189	151
TOTAL CURRENT ASSETS	3,537	3,406
INVESTMENTS	2,001	1,921
UTILITY PLANT, AT ORIGINAL COST
General	3,008	2,719
TOTAL	42,731	40,411
Less: Accumulated depreciation	9,063	8,541
Net	33,668	31,870
Construction work in progress	1,605	1,175
NET UTILITY PLANT	35,273	33,045
NON-UTILITY PLANT
Non-utility property, less accumulated depreciation	1,776	1,482
Construction work in progress	551	689
NET PLANT	37,600	35,216
OTHER NONCURRENT ASSETS
Goodwill	428	428
Intangible assets, less accumulated amortization of $15 and $6 in 2017 and 2016, respectively	131	124
Regulatory assets	4,266	7,024
Other deferred charges and noncurrent assets	148	136
TOTAL OTHER NONCURRENT ASSETS	4,973	7,712
TOTAL ASSETS	48,111	48,255
CURRENT LIABILITIES
Long-term debt due within one year	1,298	39
Notes payable	577	1,054
Accounts payable	1,286	1,147
Customer deposits	346	352
Accrued taxes	108	64
Accrued interest	143	150
Accrued wages	105	101
Fair value of derivative liabilities	17	77
Regulatory liabilities	101	128
System benefit charge	535	434
Other current liabilities	386	297
TOTAL CURRENT LIABILITIES	4,902	3,843
NONCURRENT LIABILITIES
Provision for injuries and damages	153	160
Pensions and retiree benefits	1,443	1,847
Superfund and other environmental costs	737	753
Asset retirement obligations	314	246
Fair value of derivative liabilities	38	40
Deferred income taxes and unamortized investment tax credits	5,495	10,205
Regulatory liabilities	4,577	1,905
Other deferred credits and noncurrent liabilities	296	215
TOTAL NONCURRENT LIABILITIES	13,053	15,371
LONG-TERM DEBT	14,731	14,735
EQUITY
Common shareholders’ equity	15,418	14,298
Noncontrolling interest	7	8
TOTAL EQUITY (See Statement of Equity)	15,425	14,306
TOTAL LIABILITIES AND EQUITY	48,111	48,255
Electric
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	28,994	27,747
Gas
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	8,256	7,524
Steam
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	2,473	2,421
CECONY
CURRENT ASSETS
Cash and temporary cash investments	730	702
Accounts receivable - customers, less allowance for uncollectible accounts	1,009	1,032
Other receivables, less allowance for uncollectible accounts	92	81
Taxes receivable	19	0
Accrued unbilled revenue	454	399
Accounts receivable from affiliated companies	64	109
Fuel oil, gas in storage, materials and supplies, at average cost	287	270
Prepayments	108	100
Regulatory assets	62	90
Restricted cash	0	2
Other current assets	84	95
TOTAL CURRENT ASSETS	2,909	2,880
INVESTMENTS	383	315
UTILITY PLANT, AT ORIGINAL COST
General	2,753	2,490
TOTAL	40,024	37,847
Less: Accumulated depreciation	8,321	7,836
Net	31,703	30,011
Construction work in progress	1,502	1,104
NET UTILITY PLANT	33,205	31,115
NON-UTILITY PLANT
Non-utility property, less accumulated depreciation	4	4
NET PLANT	33,209	31,119
OTHER NONCURRENT ASSETS
Goodwill	245	245
Regulatory assets	3,863	6,473
Other deferred charges and noncurrent assets	87	69
TOTAL OTHER NONCURRENT ASSETS	3,950	6,542
TOTAL ASSETS	40,451	40,856
CURRENT LIABILITIES
Long-term debt due within one year	1,200	0
Notes payable	150	600
Accounts payable	1,057	876
Accounts payable to affiliated companies	10	10
Customer deposits	334	336
Accrued taxes	102	50
Accrued taxes to affiliated companies	72	119
Accrued interest	113	111
Accrued wages	95	91
Fair value of derivative liabilities	12	66
Regulatory liabilities	65	90
System benefit charge	483	398
Other current liabilities	245	242
TOTAL CURRENT LIABILITIES	3,938	2,989
NONCURRENT LIABILITIES
Provision for injuries and damages	147	154
Pensions and retiree benefits	1,140	1,544
Superfund and other environmental costs	637	655
Asset retirement obligations	287	227
Fair value of derivative liabilities	31	33
Deferred income taxes and unamortized investment tax credits	5,306	9,450
Regulatory liabilities	4,219	1,712
Other deferred credits and noncurrent liabilities	242	190
TOTAL NONCURRENT LIABILITIES	12,009	13,965
LONG-TERM DEBT	12,065	12,073
EQUITY
Common shareholders’ equity	12,439	11,829
TOTAL LIABILITIES AND EQUITY	40,451	40,856
CECONY | Electric
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	27,299	26,122
CECONY | Gas
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	7,499	6,814
CECONY | Steam
UTILITY PLANT, AT ORIGINAL COST
Utility plant, at original cost	$ 2,473	$ 2,421