CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 88	$ 100
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	406	325
Amortization of deferred financing costs	7	8
Deferred income taxes	(17)	(56)
Changes in other assets and liabilities:
Accounts and notes receivable, net	(80)	(73)
Accounts receivable/payable–affiliated companies	22	(17)
Inventory	(4)	(3)
Accounts payable	(7)	(15)
Taxes receivable	59	95
Interest and taxes accrued	(16)	(46)
Non-trading derivatives, net	1	0
Net regulatory assets and liabilities	(69)	20
Other current assets	18	18
Other current liabilities	14	(13)
Other assets	7	(2)
Other liabilities	1	1
Other, net	0	(1)
Net cash provided by operating activities	430	341
Cash Flows from Investing Activities:
Capital expenditures	(444)	(442)
Decrease in notes receivable–affiliated companies	0	107
Decrease (increase) in restricted cash of Bond Companies	(2)	13
Other, net	(8)	(6)
Net cash used in investing activities	(454)	(328)
Cash Flows from Financing Activities:
Proceeds from long-term debt	300	0
Payments of long-term debt	(408)	(198)
Increase in short-term notes payable–affiliated companies	132	131
Dividend to parent	(10)	0
Debt issuance costs	(3)	0
Net cash provided (used) in financing activities	11	(67)
Net Decrease in Cash and Cash Equivalents	(13)	(54)
Cash and Cash Equivalents at Beginning of Period	264	290
Cash and Cash Equivalents at End of Period	251	236
Cash Payments:
Interest, net of capitalized interest	96	98
Income taxes (refunds), net	(8)	27
Non-cash transactions:
Accounts payable related to capital expenditures	$ 52	$ 50