Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 73	$ 64
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	101	92
Deferred income taxes	9	6
Pension and other postretirement benefits	6	6
Allowance for equity funds used during construction	(3)	(4)
Decoupling mechanism deferrals, net of amortization	(4)	3
(Amortization) Deferral of net benefits due to Tax Reform	(5)	15
Other non-cash income and expenses, net	10	4
Changes in working capital:
(Increase) decrease in accounts receivable and unbilled revenues	(1)	45
Decrease (increase) in inventories	3	(2)
Decrease (increase) in margin deposits, net	1	(6)
(Decrease) in accounts payable and accrued liabilities	(13)	(17)
Other working capital items, net	(12)	(5)
Other, net	(9)	(7)
Net cash provided by operating activities	156	194
Cash flows from investing activities:
Capital expenditures	(150)	(131)
Sales of Nuclear decommissioning trust securities	4	3
Purchases of Nuclear decommissioning trust securities	(2)	(3)
Other, net	(3)	1
Net cash used in investing activities	(151)	(130)
Cash flows from financing activities:
Dividends paid	(32)	(30)
Other	(3)	(3)
Net cash used in financing activities	(35)	(33)
(Decrease) increase in cash and cash equivalents	(30)	31
Cash and cash equivalents, beginning of period	119	39
Cash and cash equivalents, end of period	89	70
Supplemental cash flow information is as follows:
Cash paid for interest, net of amounts capitalized	$ 13	$ 13