CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net income	$ 169	$ 165
Other comprehensive income (loss):
Adjustment to pension and other postretirement plans (net of tax of $1 and $1)	1	1
Net deferred gain (loss) from cash flow hedges (net of tax of $-0- and $1)	(1)	4
Reclassification of deferred loss from cash flow hedges realized in net income (net of tax of $-0- and $-0-)	1	0
Total	1	5
Comprehensive income	170	170
Houston Electric [Member]
Net income	27	52
Other comprehensive income (loss):
Net deferred gain (loss) from cash flow hedges (net of tax of $-0- and $1)	(1)	4
Total	(1)	4
Comprehensive income	26	56
CERC Corp [Member]
Net income	138	130
Other comprehensive income (loss):
Total	0	0
Comprehensive income	$ 138	$ 130