Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Cash Flows [Abstract]
Net earnings (loss)	$ 1,992	$ 858	$ 1,213
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities
Asset impairments	31	83	0
Depreciation, amortization and accretion	356	356	349
Pension and postretirement net periodic benefit cost	(99)	(58)	(92)
Pension and postretirement contributions	(48)	(47)	(47)
Actuarial (gain) loss on pension and postretirement plans	96	87	165
Pension curtailments and settlements, net	(1)	0	(1)
Deferred income taxes, net	77	(31)	137
(Gain) loss on disposition of businesses and assets, net	3	3	7
Stock-based compensation	28	48	71
Undistributed earnings in unconsolidated affiliates	13	(14)	(12)
Gain on Sale of Investments	(1,408)	0	0
Other, net	18	18	26
Operating cash provided by (used in) discontinued operations	5	0	(10)
Changes in operating assets and liabilities
Trade receivables - third party and affiliates, net	141	165	(48)
Inventories	124	6	(158)
Other assets	60	(9)	(113)
Trade payables - third party and affiliates	(6)	(59)	15
Other liabilities	(39)	48	56
Net cash provided by (used in) operating activities	1,343	1,454	1,558
Investing Activities
Capital expenditures on property, plant and equipment	(364)	(370)	(337)
Acquisitions, net of cash acquired	(100)	(91)	(144)
Proceeds from sale of businesses and assets, net	21	1	13
Proceeds from Sale of Equity Method Investments	1,575	0	0
Proceeds from Sale and Maturity of Marketable Securities	43	0	0
Purchases of marketable securities	(544)	(16)	0
Other, net	(39)	(17)	(39)
Net cash provided by (used in) investing activities	592	(493)	(507)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(287)	247	(38)
Proceeds from short-term borrowings	311	117	51
Repayments of short-term borrowings	(466)	(91)	(78)
Proceeds from long-term debt	0	499	561
Repayments of long-term debt	(30)	(360)	(536)
Purchases of treasury stock, including related fees	(650)	(996)	(805)
Stock option exercises	0	(1)	0
Common stock dividends	(293)	(300)	(280)
(Distributions to) contributions from noncontrolling interests	(29)	(10)	(23)
Other, net	(27)	(40)	(17)
Net cash provided by (used in) financing activities	(1,471)	(935)	(1,165)
Exchange rate effects on cash and cash equivalents	28	(2)	(23)
Net increase (decrease) in cash and cash equivalents	492	24	(137)
Cash and cash equivalents as of beginning of period	463	439	576
Cash and cash equivalents as of end of period	$ 955	$ 463	$ 439