STATEMENTS OF CONSOLIDATED INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Utility revenues	$ 2,606	$ 2,380	$ 2,603
Non-utility revenues	3,997	2,074	1,924
Total	6,603	4,454	4,527
Expenses:
Utility natural gas	1,109	983	1,264
Non-utility natural gas	3,785	1,983	1,838
Operation and maintenance	839	777	741
Depreciation and amortization	279	249	227
Taxes other than income taxes	147	144	144
Total	6,159	4,136	4,214
Operating Income	444	318	313
Other Income (Expense):
Interest and other finance charges	(123)	(122)	(137)
Equity in earnings (losses) of unconsolidated affiliates	265	208	(1,633)
Other, net	(2)	3	6
Total	140	89	(1,764)
Income (Loss) Before Income Taxes	584	407	(1,451)
Income tax expense (benefit)	(161)	162	(539)
Net Income (Loss)	$ 745	$ 245	$ (912)