Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Operating Activities
Net earnings (loss)	$ 562	$ 395	$ 1,699	$ 684
Depreciation, amortization and cost of timber harvested			990	1,075
Deferred income tax provision (benefit), net			163	295	$ 3
Restructuring and other charges	0	0	48	(16)
Pension plan contributions			0	(1,250)
Litigation settlement	0	0	0	354
Net gain on transfer of North American Consumer Packaging business			(488)	0
Net bargain purchase gain on acquisition of business	0	0	0	(6)
Net (gains) losses on sales and impairments of businesses	122	0	122	9
Equity method dividends received			130	129
Equity (earnings) loss, net	(92)	(45)	(257)	(113)
Periodic pension expense, net			172	237
Other, net			75	92
Changes in current assets and liabilities
Accounts and notes receivable			(441)	(293)
Contract assets			(20)	0
Inventories			(120)	(70)
Accounts payable and accrued liabilities			301	5
Interest payable			(33)	(11)
Other			64	(198)
Cash Provided By (Used For) Operations			2,405	569
Investment Activities
Invested in capital projects			(1,286)	(935)
Acquisitions, net of cash acquired			0	(45)
Net settlement on transfer of North American Consumer Packaging business			(40)	0
Proceeds from divestitures, net of cash divested			0	4
Proceeds from sale of fixed assets			12	22
Other			4	(54)
Cash Provided By (Used For) Investment Activities			(1,310)	(1,008)
Financing Activities
Repurchases of common stock and payments of restricted stock tax withholding			(532)	(46)
Issuance of debt			349	1,366
Reduction of debt			(242)	(369)
Change in book overdrafts			(33)	5
Dividends paid			(588)	(573)
Debt tender premiums paid			0	(1)
Other			0	(2)
Cash Provided By (Used For) Financing Activities			(1,046)	380
Effect of Exchange Rate Changes on Cash			(41)	24
Change in Cash and Temporary Investments			8	(35)
Cash and Temporary Investments
Beginning of period			1,018	1,033	1,033
End of period	$ 1,026	$ 998	$ 1,026	$ 998	$ 1,018