CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows From Operating Activities:
Net income (loss)	$ (3,112)	$ 891	$ 537	[1]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	357	471	560
Amortization of debt issuance costs	9	8	8
Impairments	2,830	16	171
Deferred income taxes	409	(409)	0
(Gain) loss on derivatives, unsettled	138	(94)	24
Stock-based compensation	3	8	14
(Gain) loss on early extinguishment of debt	(35)	(8)	17
(Gain) loss on sale of assets	0	2	(17)
Other	6	10	(1)
Change in assets and liabilities:
Accounts receivable	50	234	(153)
Accounts payable	(131)	(141)	65
Taxes payable	(7)	0	2
Interest payable	(11)	0	(10)
Inventories	2	(7)	(13)
Other assets and liabilities	20	(17)	19
Net cash provided by operating activities	528	964	1,223
Cash Flows From Investing Activities:
Capital investments	(896)	(1,099)	(1,290)
Proceeds from sale of property and equipment	12	54	1,643
Cash acquired in Montage merger	3	0	0
Other	0	0	6
Net cash provided by (used in) investing activities	(881)	(1,045)	359
Cash Flows From Financing Activities:
Payments on current portion of long-term debt	0	(52)	0
Payments on long-term debt	(72)	(54)	(2,095)
Payments on revolving credit facility	(1,671)	(532)	(1,983)
Borrowings under revolving credit facility	2,337	566	1,983
Change in bank drafts outstanding	1	(19)	17
Proceeds from issuance of long-term debt	350	0	0
Debt issuance and other financing costs	(10)	(3)	(9)
Proceeds from issuance of common stock	152	0	0
Purchase of treasury stock	0	(21)	(180)
Preferred stock dividend	0	0	(27)
Cash paid for tax withholding	(4)	(1)	(3)
Other	0	1	0
Net cash provided by (used in) financing activities	361	(115)	(2,297)
Increase (decrease) in cash and cash equivalents	8	(196)	(715)
Cash and cash equivalents at beginning of year	5	201	916
Cash and cash equivalents at end of year	13	5	201
Montage Resources Corporation
Cash Flows From Financing Activities:
Payments on revolving credit facility	(200)	0	0
Repayment of Montage senior notes	$ (522)	$ 0	$ 0

[1] In 2018, deferred tax activity incurred in other comprehensive income was offset by a valuation allowance.