CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ 16	$ (377)	[1],[2],[3]
ADJUSTMENTS TO RECONCILE NET INCOME (LOSS) TO CASH PROVIDED BY OPERATING ACTIVITIES:
Depreciation, depletion and amortization	1,672	1,335	[2],[3]
Deferred income tax benefit	(314)	(10)	[2]
Derivative (gains) losses, net	(137)	500	[2]
Cash receipts (payments) on derivative settlements, net	129	(162)	[2]
Stock-based compensation	24	25	[2]
Gains on sales of assets	(33)	(27)	[2],[3]
Impairments	11	122	[2],[3]
Exploration	35	81	[2]
(Gains) losses on investments	21	(139)	[2]
(Gains) losses on purchases or exchanges of debt	(70)	68
Other	42	(90)	[2]
Changes in assets and liabilities	(214)	69	[2]
Net Cash Provided By Operating Activities	1,182	1,395	[2]
CASH FLOWS FROM INVESTING ACTIVITIES:
Drilling and completion costs	(1,640)	(1,407)	[2]
Business combination, net	(353)	0	[2]
Acquisitions of proved and unproved properties	(31)	(118)	[2]
Proceeds from divestitures of proved and unproved properties	110	395	[2]
Additions to other property and equipment	(27)	(11)	[2]
Proceeds from sales of other property and equipment	6	75	[2]
Proceeds from sales of investments	0	74	[2]
Net Cash Used In Investing Activities	(1,935)	(992)	[2]
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving credit facility borrowings	8,805	9,095	[2]
Payments on revolving credit facility borrowings	(7,495)	(9,231)	[2]
Proceeds from issuance of senior notes, net	0	1,237	[2]
Cash paid to purchase debt	(457)	(1,285)	[2]
Extinguishment of other financing	0	(122)	[2]
Cash paid for preferred stock dividends	(69)	(69)	[2]
Distributions to noncontrolling interest owners	(2)	(5)	[2]
Other	(19)	(24)	[2]
Net Cash Provided By (Used In) Financing Activities	763	(404)	[2]
Net increase (decrease) in cash and cash equivalents	10	(1)	[2]
Cash and cash equivalents, beginning of period	4	5	[2]
Cash and cash equivalents, end of period	14	4	[2]
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid, net of capitalized interest	487	527	[2]
Income taxes paid, net of refunds received	(6)	(3)	[2]
SUPPLEMENTAL DISCLOSURE OF SIGNIFICANT NON-CASH INVESTING AND FINANCING ACTIVITIES:
Common stock issued for business combination	2,037	0	[2]
Debt exchanged for common stock	693	0	[2]
Preferred stock exchanged for common stock	40	0	[2]
Change in senior notes exchanged	35	0	[2]
Change in accrued drilling and completion costs
SUPPLEMENTAL DISCLOSURE OF SIGNIFICANT NON-CASH INVESTING AND FINANCING ACTIVITIES:
Change in non-cash investing and financing activities	49	142	[2]
Change in divested proved and unproved properties
SUPPLEMENTAL DISCLOSURE OF SIGNIFICANT NON-CASH INVESTING AND FINANCING ACTIVITIES:
Change in non-cash investing and financing activities	$ (144)	$ (5)	[2]

[1] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.

[2] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.

[3] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.