STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 276	$ 261	$ 252
Other comprehensive income:
Net deferred gain from cash flow hedges (net of tax of $-0-, $-0-, and $-0-)	1	0	0
Total	1	0	0
Comprehensive income	$ 277	$ 261	$ 252