CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income (Loss)	$ 195	$ (75)	$ 364	$ 90
Other comprehensive income (loss):
Adjustment to pension and other postretirement plans (net of tax of $1, $-0-, $2 and $1)	2	2	3	3
Net deferred gain (loss) from cash flow hedges (net of tax of $-0-, $-0-, $-0- and $1)	0	(1)	(1)	3
Reclassification of deferred loss from cash flow hedges realized in net income (net of tax of $-0-, $-0-, $-0- and $-0-)	0	0	1	0
Total	2	1	3	6
Comprehensive income (loss)	197	(74)	367	96
Houston Electric [Member]
Net income (Loss)	100	101	127	153
Other comprehensive income (loss):
Net deferred gain (loss) from cash flow hedges (net of tax of $-0-, $-0-, $-0- and $1)	0	0	(1)	4
Total	0	0	(1)	4
Comprehensive income (loss)	100	101	126	157
CERC Corp [Member]
Net income (Loss)	28	36	166	166
Other comprehensive income (loss):
Total	0	0	0	0
Comprehensive income (loss)	$ 28	$ 36	$ 166	$ 166