CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOW FROM OPERATING ACTIVITIES
Net income (loss)	$ 785	$ (13,719)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Discontinued operations, net	444	1,335
Depreciation, depletion and amortization of assets	6,481	6,343
Deferred income tax benefit	(192)	(2,117)
Asset impairments and other charges	173	10,915
(Gains) losses on sales of equity investments and other assets, net	(119)	824
Other noncash reconciling items	240	134
Changes in operating assets and liabilities:
(Increase) decrease in receivables	(1,366)	4,248
(Increase) decrease in inventory	92	(242)
(Increase) decrease in other current assets	(172)	293
Increase (decrease) in accounts payable and accrued liabilities	593	(5,609)
Increase in current domestic and international income taxes	63	70
Operating cash flow from continuing operations	7,022	2,475
Operating cash flow from discontinued operations, net of taxes	320	76
Net cash provided by operating activities	7,342	2,551
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(1,933)	(1,921)
Change in capital accrual	(83)	(725)
Purchases of businesses and assets, net	(122)	(102)
Proceeds from sales of other assets and equity investments, net	1,005	193
Equity investments and other, net	(21)	188
Investing cash flow from continuing operations	(1,154)	(2,367)
Investing cash flow from discontinued operations	(48)	(31)
Net cash used by investing activities	(1,202)	(2,398)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from long-term debt, net of issuance costs	0	4,956
Payments of long-term debt	(4,555)	(4,615)
Proceeds from issuance of common stock	24	126
Cash dividends paid on common and preferred stock	(630)	(1,634)
Financing portion of net cash paid for derivative instruments	(824)	(377)
Other financing, net	(48)	(103)
Financing cash flow from continuing operations	(6,033)	(1,647)
Financing cash flow from discontinued operations	(7)	(6)
Net cash used by financing activities	(6,040)	(1,653)
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	100	(1,500)
Cash, cash equivalents, restricted cash and restricted cash equivalents — beginning of period	2,194	3,574
Cash, cash equivalents, restricted cash and restricted cash equivalents — end of period	$ 2,294	$ 2,074