Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 248	$ 239
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	262	245
Deferred income taxes and investment tax credits	151	70
Allowance for equity funds used during construction	(1)	(18)
Deferred recovery clauses	(73)	54
Receivables, less allowance for uncollectibles	(70)	(25)
Inventories	(8)	18
Taxes accrued	45	123
Interest accrued	25	23
Accounts payable	(20)	19
Regulatory assets and liabilities	(67)	(6)
Other	(30)	(40)
Cash flows from operating activities	462	702
Cash flows from investing activities
Capital expenditures	(451)	(518)
Net proceeds from sale of assets	0	9
Cash flows used in investing activities	(451)	(509)
Cash flows from financing activities
Equity contributions	98	90
Repayment of long-term debt	0	(83)
Net increase (decrease) in short-term debt	85	(12)
Dividends	(185)	(182)
Other financing activities	(1)	0
Cash flows used in financing activities	(3)	(187)
Net increase in cash and cash equivalents	8	6
Cash and cash equivalents at beginning of period	10	9
Cash and cash equivalents at end of period	18	15
Supplemental disclosure of non-cash activities
Change in accrued capital expenditures	$ (25)	$ (20)