Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 110	$ 105
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	185	170
Deferred income taxes	6	20
Pension and other postretirement benefits	13	13
Allowance for equity funds used during construction	(6)	(5)
Decoupling mechanism deferrals, net of amortization	2	(15)
Deferral of net benefits due to Tax Reform	25	0
Other non-cash income and expenses, net	4	16
Changes in working capital:
Decrease in accounts receivable and unbilled revenues	26	55
(Increase) in inventories	(7)	0
Decrease in margin deposits, net	4	7
(Decrease) in accounts payable and accrued liabilities	(20)	(29)
Other working capital items, net	13	11
Other, net	(17)	(15)
Net cash provided by operating activities	338	333
Cash flows from investing activities:
Capital expenditures	(266)	(245)
Sales of Nuclear decommissioning trust securities	6	11
Purchases of Nuclear decommissioning trust securities	(5)	(9)
Other, net	0	(2)
Net cash used in investing activities	(265)	(245)
Cash flows from financing activities:
Dividends paid	(61)	(57)
Other	(3)	(4)
Net cash used in financing activities	(64)	(61)
Increase in cash and cash equivalents	9	27
Cash and cash equivalents, beginning of period	39	6
Cash and cash equivalents, end of period	48	33
Supplemental cash flow information is as follows:
Cash paid for interest, net of amounts capitalized	58	55
Cash paid for income taxes	10	13
Capital Lease Obligations Incurred	$ 12	$ 55