Consolidated Income Statement - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING REVENUES
Total operating revenues	$ 13,676	$ 12,246	$ 12,574
OPERATING EXPENSES
Depreciation and amortization	2,032	1,920	1,684
Taxes, other than income taxes	2,810	2,575	2,406
TOTAL OPERATING EXPENSES	10,850	9,592	9,898
OPERATING INCOME	2,826	2,654	2,676
OTHER INCOME (DEDUCTIONS)
Investment income (loss)	(420)	(214)	96
Other income	22	23	45
Allowance for equity funds used during construction	21	17	14
Other deductions	(161)	(227)	(104)
TOTAL OTHER INCOME (DEDUCTIONS)	(538)	(401)	51
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	2,288	2,253	2,727
INTEREST EXPENSE
Interest on long-term debt	930	915	888
Other interest	(14)	118	116
Allowance for borrowed funds used during construction	(11)	(14)	(13)
NET INTEREST EXPENSE	905	1,019	991
INCOME BEFORE INCOME TAX EXPENSE	1,383	1,234	1,736
INCOME TAX EXPENSE	190	90	296
NET INCOME	1,193	1,144	1,440
(Loss) Income attributable to non-controlling interest	(153)	43	97
NET INCOME FOR COMMON STOCK	$ 1,346	$ 1,101	$ 1,343
Net income per common share — basic (in dollars per share)	$ 3.86	$ 3.29	$ 4.09
Net income per common share — diluted (in dollars per share)	$ 3.85	$ 3.28	$ 4.08
AVERAGE NUMBER OF SHARES OUTSTANDING — BASIC (in shares)	348.4	334.8	328.5
AVERAGE NUMBER OF SHARES OUTSTANDING — DILUTED (in shares)	349.4	335.7	329.5
CECONY
OPERATING REVENUES
Total operating revenues	$ 11,716	$ 10,647	$ 10,821
OPERATING EXPENSES
Depreciation and amortization	1,705	1,598	1,373
Taxes, other than income taxes	2,696	2,456	2,295
TOTAL OPERATING EXPENSES	9,256	8,337	8,473
OPERATING INCOME	2,460	2,310	2,348
OTHER INCOME (DEDUCTIONS)
Investment income (loss)	16	19	40
Allowance for equity funds used during construction	19	14	12
Other deductions	(143)	(204)	(87)
TOTAL OTHER INCOME (DEDUCTIONS)	(108)	(171)	(35)
INCOME BEFORE INTEREST AND INCOME TAX EXPENSE	2,352	2,139	2,313
INTEREST EXPENSE
Interest on long-term debt	759	718	672
Other interest	13	33	67
Allowance for borrowed funds used during construction	(10)	(12)	(11)
NET INTEREST EXPENSE	762	739	728
INCOME BEFORE INCOME TAX EXPENSE	1,590	1,400	1,585
INCOME TAX EXPENSE	246	215	335
NET INCOME FOR COMMON STOCK	1,344	1,185	1,250
Electric
OPERATING REVENUES
Total operating revenues	9,485	8,730	8,694
Electric | CECONY
OPERATING REVENUES
Total operating revenues	8,806	8,103	8,062
Gas
OPERATING REVENUES
Total operating revenues	2,638	2,269	2,391
OPERATING EXPENSES
Operating costs	690	527	880
Gas | CECONY
OPERATING REVENUES
Total operating revenues	2,378	2,036	2,132
OPERATING EXPENSES
Operating costs	541	426	606
Steam
OPERATING REVENUES
Total operating revenues	532	508	627
Steam | CECONY
OPERATING REVENUES
Total operating revenues	532	508	627
Non-utility
OPERATING REVENUES
Total operating revenues	1,021	739	862
Purchased power
OPERATING EXPENSES
Operating costs	1,835	1,600	1,546
Purchased power | CECONY
OPERATING EXPENSES
Operating costs	1,633	1,432	1,357
Fuel
OPERATING EXPENSES
Operating costs	229	156	207
Fuel | CECONY
OPERATING EXPENSES
Operating costs	229	156	207
Other operations and maintenance
OPERATING EXPENSES
Operating costs	3,254	2,814	3,175
Other operations and maintenance | CECONY
OPERATING EXPENSES
Operating costs	$ 2,452	$ 2,269	$ 2,635