CONSOLIDATED INCOME STATEMENT (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
OPERATING REVENUES
Total operating revenues	$ 2,971	$ 2,719	$ 6,648	$ 5,953
OPERATING EXPENSES
Depreciation and amortization	502	476	1,000	946
Taxes, other than income taxes	672	604	1,375	1,242
TOTAL OPERATING EXPENSES	2,553	2,240	5,369	4,666
OPERATING INCOME	418	479	1,279	1,287
OTHER INCOME (DEDUCTIONS)
Investment income (loss)	(24)	25	(185)	51
Other income	7	4	14	6
Allowance for equity funds used during construction	5	5	10	10
Other deductions	(38)	(55)	(76)	(126)
TOTAL OTHER INCOME (DEDUCTIONS)	(50)	(21)	(237)	(59)
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	368	458	1,042	1,228
INTEREST EXPENSE
Interest on long-term debt	230	234	458	459
Other interest	35	15	(14)	117
Allowance for borrowed funds used during construction	(4)	(2)	(8)	(6)
NET INTEREST EXPENSE	261	247	436	570
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT)	107	211	606	658
INCOME TAX EXPENSE (BENEFIT)	(11)	9	68	64
NET INCOME	118	202	538	594
Income (loss) attributable to non-controlling interest	(47)	12	(46)	29
NET INCOME	$ 165	$ 190	$ 584	$ 565
Net income per common share - basic (dollars per share)	$ 0.48	$ 0.57	$ 1.70	$ 1.69
Net income per common share - diluted (dollars per share)	$ 0.48	$ 0.57	$ 1.70	$ 1.69
AVERAGE NUMBER OF SHARES OUTSTANDING-BASIC (shares)	345.4	334.1	344.0	333.8
AVERAGE NUMBER OF SHARES OUTSTANDING—DILUTED (shares)	346.2	335.0	344.8	334.7
Subsidiaries
OPERATING REVENUES
Total operating revenues	$ 2,486	$ 2,345	$ 5,692	$ 5,200
OPERATING EXPENSES
Depreciation and amortization	423	396	838	786
Taxes, other than income taxes	643	579	1,317	1,186
TOTAL OPERATING EXPENSES	2,165	1,956	4,584	4,068
OPERATING INCOME	321	389	1,108	1,132
OTHER INCOME (DEDUCTIONS)
Investment income (loss)	5	3	11	5
Allowance for equity funds used during construction	5	4	9	9
Other deductions	(33)	(47)	(66)	(114)
TOTAL OTHER INCOME (DEDUCTIONS)	(23)	(40)	(46)	(100)
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	298	349	1,062	1,032
INTEREST EXPENSE
Interest on long-term debt	186	185	370	358
Other interest	4	7	8	19
Allowance for borrowed funds used during construction	(4)	(2)	(7)	(5)
NET INTEREST EXPENSE	186	190	371	372
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT)	112	159	691	660
INCOME TAX EXPENSE (BENEFIT)	(16)	7	98	102
NET INCOME	128	152	593	558
Electric
OPERATING REVENUES
Total operating revenues	2,115	1,983	4,228	3,890
Electric | Subsidiaries
OPERATING REVENUES
Total operating revenues	1,963	1,845	3,931	3,616
Gas
OPERATING REVENUES
Total operating revenues	490	453	1,566	1,384
OPERATING EXPENSES
Operating costs	83	77	379	309
Gas | Subsidiaries
OPERATING REVENUES
Total operating revenues	449	416	1,423	1,250
OPERATING EXPENSES
Operating costs	63	64	296	260
Steam
OPERATING REVENUES
Total operating revenues	74	84	338	334
Steam | Subsidiaries
OPERATING REVENUES
Total operating revenues	74	84	338	334
Non-utility
OPERATING REVENUES
Total operating revenues	292	199	516	345
Purchased power
OPERATING EXPENSES
Operating costs	463	380	900	688
Purchased power | Subsidiaries
OPERATING EXPENSES
Operating costs	417	345	813	618
Fuel
OPERATING EXPENSES
Operating costs	29	23	122	101
Fuel | Subsidiaries
OPERATING EXPENSES
Operating costs	29	23	122	101
Other operations and maintenance
OPERATING EXPENSES
Operating costs	804	680	1,593	1,380
Other operations and maintenance | Subsidiaries
OPERATING EXPENSES
Operating costs	590	549	1,198	1,117
CECONY | Subsidiaries
OPERATING EXPENSES
Depreciation and amortization	423	396	838	786
OPERATING INCOME	321	389	$ 1,108	$ 1,132
INTEREST EXPENSE
INCOME TAX EXPENSE (BENEFIT)	$ (16)	$ 7