Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Net earnings (loss)	$ 1,213	$ 849	$ 906
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities
Asset impairments	0	0	2
Depreciation, amortization and accretion	349	310	295
Pension and postretirement net periodic benefit cost	(92)	(80)	(54)
Pension and postretirement contributions	(47)	(363)	(350)
Actuarial (gain) loss on pension and postretirement plans	165	46	103
Pension curtailments and settlements, net	(1)	0	0
Deferred income taxes, net	137	(152)	83
(Gain) loss on disposition of businesses and assets, net	7	5	2
Stock-based compensation	71	47	31
Undistributed earnings in unconsolidated affiliates	(12)	(52)	(24)
Other, net	26	12	15
Operating cash provided by (used in) discontinued operations	(10)	8	2
Changes in operating assets and liabilities
Trade receivables - third party and affiliates, net	(48)	(110)	(59)
Inventories	(158)	(97)	8
Other assets	(113)	(7)	39
Trade payables - third party and affiliates	15	126	7
Other liabilities	56	261	(113)
Net cash provided by (used in) operating activities	1,558	803	893
Investing Activities
Capital expenditures on property, plant and equipment	(337)	(267)	(246)
Acquisitions, net of cash acquired	(144)	(269)	(178)
Proceeds from sale of businesses and assets, net	13	1	12
Other, net	(39)	(14)	(27)
Net cash provided by (used in) investing activities	(507)	(549)	(439)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(38)	111	(352)
Proceeds from short-term borrowings	51	182	53
Repayments of short-term borrowings	(78)	(124)	(90)
Proceeds from long-term debt	561	351	1,509
Repayments of long-term debt	(536)	(77)	(1,127)
Purchases of treasury stock, including related fees	(805)	(500)	(500)
Stock option exercises	0	1	6
Common stock dividends	(280)	(241)	(201)
(Distributions to) contributions from noncontrolling interests	(23)	(27)	(24)
Other, net	(17)	(27)	(33)
Net cash provided by (used in) financing activities	(1,165)	(351)	(759)
Exchange rate effects on cash and cash equivalents	(23)	35	(24)
Net increase (decrease) in cash and cash equivalents	(137)	(62)	(329)
Cash and cash equivalents as of beginning of period	576	638	967
Cash and cash equivalents as of end of period	$ 439	$ 576	$ 638