Consolidated Condensed Statements of Cash Flows (Unaudited) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)		Jun. 30, 2019 USD ($)
Payments to Acquire Additional Interest in Subsidiaries	$ 49	[1]	$ 0	[1]
Restricted Cash and Cash Equivalents	241
Cash flows from operating activities:
Net income	293		450
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	361	[2]	398	[2]
Non Cash Gains Losses On Extinguishment Of Debt	6		0
Deferred income taxes	9		16
Impairment losses	0		55
Mark-to-market activity, net	(198)	[3]	(231)	[3]
(Income) from unconsolidated subsidiaries	(4)		(11)
Return on investments from unconsolidated subsidiaries	0		11
Other	10		(3)
Change in operating assets and liabilities:
Accounts receivable	75		215
Accounts payable	(122)		(269)
Margin deposits and other prepaid expense	21		40
Other assets and liabilities, net	(146)		(61)
Derivative instruments, net	129		(91)
Net cash provided by operating activities	434		519
Cash flows from investing activities:
Purchases of property, plant and equipment	(320)		(304)
Other	16		(11)
Net cash used in investing activities	(304)		(315)
Cash flows from financing activities:
Proceeds from Issuance of Secured Debt	0		941
Repayment of CCFC Term Loan and First Lien Term Loans	(22)		(942)
Repayments of First Lien Notes	(429)		0
Repayments of Senior Unsecured Notes	(623)		(44)
Borrowings under revolving facilities	450		220
Repayments of revolving facilities	(450)		(175)
Proceeds from Issuance of Other Long-term Debt	900		34
Repayments of project financing, notes payable and other	(412)		(77)
Financing costs	(46)		(8)
Other	(7)		0
Net cash used in financing activities	(688)		(51)
Net increase (decrease) in cash, cash equivalents and restricted cash	(558)		153
Cash, cash equivalents and restricted cash, beginning of period	1,476		406
Cash, cash equivalents and restricted cash, end of period	918	[4]	559	[4]
Cash paid during the period for:
Interest, net of amounts capitalized	221		283
Income taxes	2		8
Supplemental disclosure of non-cash investing and financing activities:
Change in capital expenditures included in accounts payable and other current liabilities	(27)		19
Plant tax settlement offset in prepaid assets	0		(4)
Asset retirement obligation adjustment offset in operating activities	0		(10)
Other Current Assets
Supplemental disclosure of non-cash investing and financing activities:
Transfer of Portfolio Loans and Leases to Held-for-sale	0		(335)
Other Current Liabilities
Supplemental disclosure of non-cash investing and financing activities:
Transfer of Portfolio Loans and Leases to Held-for-sale	0		$ (22)
Security project insurance
Restricted Cash and Cash Equivalents	$ 130

[1] On January 28, 2020, we completed the acquisition of the 25% noncontrolling interest of Russell City Energy Company, LLC for $35 million plus working capital adjustments of approximately $14 million for a total purchase price of approximately $49 million.

[2] Includes amortization recorded in Commodity revenue and Commodity expense associated with intangible assets and amortization recorded in interest expense associated with debt issuance costs and discounts.

[3] In addition to changes in market value on derivatives not designated as hedges, changes in mark-to-market gain (loss) also includes adjustments to reflect changes in credit default risk exposure.

[4] )Our cash and cash equivalents, restricted cash, current and restricted cash, net of current portion are stated as separate line items on our Consolidated Condensed Balance Sheets.