Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
REVENUES:
Total revenues	[1]	$ 2,516	$ 2,625	$ 5,399	$ 5,487
OPERATING EXPENSES:
Fuel		129	128	260	267
Purchased power		611	697	1,392	1,517
Other operating expenses		606	684	1,385	1,624
Provision for depreciation		309	283	606	560
Amortization (deferral) of regulatory assets, net		37	(107)	42	(255)
General taxes		239	240	500	494
Total operating expenses		1,931	1,925	4,185	4,207
OPERATING INCOME		585	700	1,214	1,280
OTHER INCOME (EXPENSE):
Miscellaneous income, net		80	48	134	115
Interest expense		(259)	(355)	(512)	(603)
Capitalized financing costs		16	16	34	31
Total other expense		(163)	(291)	(344)	(457)
INCOME BEFORE INCOME TAXES		422	409	870	823
INCOME TAXES		81	101	174	334
INCOME FROM CONTINUING OPERATIONS		341	308	696	489
Discontinued operations (Note 3)	[2]	(29)	(9)	(64)	1,179
NET INCOME		312	299	632	1,668
INCOME ALLOCATED TO PREFERRED STOCKHOLDERS (Note 4)		4	165	9	304
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS		$ 308	$ 134	$ 623	$ 1,364
EARNINGS PER SHARE OF COMMON STOCK (Note 4):
Basic - Continuing Operations (in dollars per share)		$ 0.63	$ 0.30	$ 1.29	$ 0.39
Basic - Discontinued Operations (in dollars per share)		(0.05)	(0.02)	(0.12)	2.47
Basic - Net Income Attributable to Common Stockholders (in dollars per share)		0.58	0.28	1.17	2.86
Diluted - Continuing Operations (in dollars per share)		0.63	0.30	1.29	0.39
Diluted - Discontinued Operations (in dollars per share)		(0.05)	(0.02)	(0.12)	2.46
Diluted - Net Income Attributable to Common Stockholders (in dollars per share)		$ 0.58	$ 0.28	$ 1.17	$ 2.85
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic, in shares		532	477	531	477
Diluted, in shares		533	479	533	478
Excise taxes collected		$ 81	$ 87	$ 183	$ 189
Income tax expense (benefit)		39	(16)	44	(887)
Distribution Services and Retail Generation [Member]
REVENUES:
Total revenues		1,931	2,049	4,240	4,344
Transmission [Member]
REVENUES:
Total revenues		367	336	719	655
Other [Member]
REVENUES:
Total revenues		$ 218	$ 240	$ 440	$ 488

[1] Includes excise and gross receipts tax collections of $81 million and $87 million during the three months ended June 30, 2019 and 2018, respectively, and $183 million and $189 million during the six months ended June 30, 2019 and 2018, respectively.

[2] Net of income tax expense (benefits) of $39 million and $(16) million for the three months ended June 30, 2019 and 2018, respectively, and $44 million and $(887) million for the six months ended June 30, 2019 and 2018, respectively.