CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net income	$ 18	$ 17
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	152	189
Amortization of deferred financing costs	3	3
Deferred income taxes	8	(3)
Changes in other assets and liabilities:
Accounts and notes receivable, net	23	26
Accounts receivable/payable–affiliated companies	(56)	(60)
Inventory	4	4
Accounts payable	48	(14)
Taxes receivable	(3)	59
Interest and taxes accrued	(68)	(52)
Net regulatory assets and liabilities	(28)	(31)
Other current assets	2	15
Other current liabilities	(3)	10
Other assets	3	6
Other liabilities	4	0
Other, net	(1)	0
Net cash provided by operating activities	106	169
Cash Flows from Investing Activities:
Capital expenditures	(210)	(227)
Increase in notes receivable–affiliated companies	(107)	0
Decrease (increase) in restricted cash of Bond Companies	4	(4)
Other, net	(4)	(4)
Net cash used in investing activities	(317)	(235)
Cash Flows from Financing Activities:
Proceeds from long-term debt, net	298	0
Payments of long-term debt	(155)	(145)
Increase in short-term notes payable–affiliated companies	0	153
Dividend to parent	(32)	0
Debt issuance costs	(2)	(1)
Other, net	1	0
Net cash provided by financing activities	110	7
Net Decrease in Cash and Cash Equivalents	(101)	(59)
Cash and Cash Equivalents at Beginning of Period	341	264
Cash and Cash Equivalents at End of Period	240	205
Cash Payments/Receipts:
Interest, net of capitalized interest	64	67
Income tax refunds, net	0	(65)
Non-cash transactions:
Accounts payable related to capital expenditures	$ 57	$ 54