CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities:
Net income	$ 120	$ 109
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	60	56
Amortization of deferred financing costs	2	2
Deferred income taxes	71	68
Write-down of natural gas inventory	1	2
Equity in (earnings) losses of unconsolidated affiliate, net of distributions	(60)	20
Changes in other assets and liabilities:
Accounts receivable and unbilled revenues, net	37	62
Accounts receivable/payable–affiliated companies	(6)	0
Inventory	108	170
Accounts payable	(65)	(174)
Fuel cost recovery	(3)	86
Interest and taxes accrued	3	1
Non-trading derivatives, net	8	1
Margin deposits, net	27	(4)
Other current assets	(3)	7
Other current liabilities	(2)	(18)
Other assets	5	12
Other liabilities	8	11
Other, net	1	0
Net cash provided by operating activities	312	411
Cash Flows from Investing Activities:
Capital expenditures	(98)	(102)
Distribution from unconsolidated affiliate in excess of cumulative earnings	74	0
Increase in notes receivable–affiliated companies	(24)	0
Decrease in notes receivable–unconsolidated affiliate	363	0
Other, net	0	2
Net cash provided by (used in) investing activities	315	(100)
Cash Flows from Financing Activities:
Decrease in short-term borrowings, net	(40)	(53)
Payments of commercial paper, net	(219)	(62)
Dividends to parent	(363)	0
Debt issuance costs	(1)	0
Decrease in notes payable–affiliated companies	0	(188)
Net cash used in financing activities	(623)	(303)
Net Increase in Cash and Cash Equivalents	4	8
Cash and Cash Equivalents at Beginning of Period	0	2
Cash and Cash Equivalents at End of Period	4	10
Cash Payments:
Interest, net of capitalized interest	28	28
Income taxes, net	0	3
Non-cash transactions:
Accounts payable related to capital expenditures	$ 28	$ 27