CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
OPERATING REVENUES	$ 298	$ 280
OPERATING EXPENSES
Operation and maintenance	29	25
General and administrative	31	46
Depreciation and amortization	41	39
Taxes other than income taxes	24	23
Total operating expenses	125	133
OPERATING INCOME	173	147
OTHER EXPENSES (INCOME)
Interest expense — net	53	50
Allowance for equity funds used during construction	(8)	(8)
Other expense	1	1
Total other expenses (income)	46	43
INCOME BEFORE INCOME TAXES	127	104
INCOME TAX PROVISION	47	39
NET INCOME	$ 80	$ 65