Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
NET INCOME	$ 212	$ 172	$ 574	$ 364
OTHER COMPREHENSIVE INCOME, NET OF TAXES
Pension and other postretirement benefit plan liability adjustments, net of taxes	1	2	5	5
TOTAL OTHER COMPREHENSIVE INCOME, NET OF TAXES	1	2	5	5
COMPREHENSIVE INCOME FOR COMMON STOCK	213	174	579	369
CECONY [Member]
NET INCOME	172	153	506	430
OTHER COMPREHENSIVE INCOME, NET OF TAXES
Pension and other postretirement benefit plan liability adjustments, net of taxes	0	0	1	0
TOTAL OTHER COMPREHENSIVE INCOME, NET OF TAXES	0	0	1	0
COMPREHENSIVE INCOME	$ 172	$ 153	$ 507	$ 430