Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
NET INCOME	$ 428	$ 388
OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES
Pension and other postretirement benefit plan liability adjustments, net of taxes	4	(1)
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES	4	(1)
COMPREHENSIVE INCOME	432	387
CECONY
NET INCOME	389	339
OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAXES	0	0
COMPREHENSIVE INCOME	$ 389	$ 339