Statement of Consolidated Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash from Operations
Net (loss) income	$ (14)	$ (853)	$ 893
Adjustments to reconcile net (loss) income to cash from operations:
Depreciation, depletion, and amortization	653	713	733
Deferred income taxes (Q)	(26)	15	(30)
Equity earnings, net of dividends (H)	20	21	17
Restructuring and other charges, net (D)	104	1,031	527
Net gain from investing activities—asset sales (U)	(173)	(3)
Net periodic pension benefit cost (O)	138	119	146
Stock-based compensation (N)	25	30	35
Provision for bad debt expense	2	21
Other	32	30	(59)
Changes in assets and liabilities, excluding effects of divestitures and foreign currency translation adjustments:
Decrease (increase) in receivables	16	283	(43)
Decrease (increase) in inventories (J)	122	137	(306)
Decrease (increase) in prepaid expenses and other current assets	17	27	(32)
Increase (decrease) in accounts payable, trade	25	(153)	(165)
(Decrease) in accrued expenses	(153)	(175)	(319)
Increase (decrease) in taxes, including income taxes	119	(330)	241
Pension contributions (O)	(343)	(173)	(992)
(Increase) in noncurrent assets	(82)	(24)	(101)
(Decrease) in noncurrent liabilities	(88)	(30)	(97)
Cash provided from operations	394	686	448
Financing Activities
Additions to debt (original maturities greater than three months) (M)	739		560
Payments on debt (original maturities greater than three months) (M)	(1)	(7)	(135)
Proceeds from the exercise of employee stock options (N)	1	2	23
Repurchase of common stock (N)			(50)
Financial contributions for the divestiture of businesses (C)	(38)	(12)
Contributions from noncontrolling interest (A)	24	51	149
Distributions to noncontrolling interest	(207)	(472)	(827)
Other	(4)	(6)	(8)
Cash provided from (used for) financing activities	514	(444)	(288)
Investing Activities
Capital expenditures	(353)	(379)	(399)
Proceeds from the sale of assets and businesses (C)	198	23	1
Additions to investments (H)	(12)	(112)	(7)
Cash used for investing activities	(167)	(468)	(405)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(14)	(7)	(4)
Net change in cash and cash equivalents and restricted cash	727	(233)	(249)
Cash and cash equivalents and restricted cash at beginning of year	883	1,116	1,365
Cash and cash equivalents and restricted cash at end of year	$ 1,610	$ 883	$ 1,116