Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net income	$ 56	$ 63
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	85	81
Deferred income taxes and investment tax credits	35	30
Allowance for equity funds used during construction	(1)	(6)
Deferred recovery clauses	(23)	27
Receivables, less allowance for uncollectibles	11	25
Inventories	(8)	(10)
Taxes accrued	16	82
Interest accrued	22	24
Accounts payable	(101)	(41)
Other	(16)	(7)
Cash flows from operating activities	76	268
Cash flows from investing activities
Capital expenditures	(143)	(151)
Cash flows used in investing activities	(143)	(151)
Cash flows from financing activities
Common stock	27	25
Net increase (decrease) in short-term debt	106	(61)
Dividends	(65)	(62)
Other financing activities	(1)	0
Cash flows from (used in) financing activities	67	(98)
Net increase in cash and cash equivalents	0	19
Cash and cash equivalents at beginning of period	10	9
Cash and cash equivalents at end of period	10	28
Supplemental disclosure of non-cash activities
Change in accrued capital expenditures	$ (12)	$ (5)