Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 641	$ (2,715)
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Impairments and other charges	12	3,353
Depreciation, depletion and amortization	673	829
Deferred Income Tax Expense (Benefit)	11	(380)
Changes in assets and liabilities:
Receivables	(364)	1,294
Accounts payable	448	(933)
Inventories	(3)	115
Other operating activities	(211)	174
Total cash flows provided by operating activities	1,229	1,243
Cash flows from investing activities:
Capital expenditures	(483)	(510)
Proceeds from sales of property, plant and equipment	145	199
Other investing activities	(57)	(33)
Total cash flows used in investing activities	(308)	(344)
Cash flows from financing activities:
Payments on long-term borrowings	(696)	(1,653)
Proceeds from issuance of long-term debt, net	0	994
Dividends to shareholders	(121)	(238)
Stock repurchase program	0	(100)
Other financing activities	7	25
Total cash flows used in financing activities	(810)	(972)
Effect of exchange rate changes on cash	(42)	(80)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	69	(153)
Cash and equivalents at beginning of period	2,563	2,268
Cash and equivalents at end of period	2,632	2,115
Cash payments during the period for:
Interest	402	396
Income taxes	$ 157	256
Maximum Percentage Gross Trade Receivables From One Customer	10.00%
Increase (Decrease) in Employee Related Liabilities	$ 22	(494)
Proceeds from Sale of Real Estate Held-for-investment	$ 87	$ 0