Consolidated Statement Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES
Net earnings (loss)	$ 482	$ 1,220	$ 2,017
Depreciation, amortization, and cost of timber harvested	1,287	1,306	1,328
Deferred income tax provision (benefit), net	9	212	133
Restructuring and other charges, net	195	57	29
Periodic pension expense, net	32	93	632
Gain (Loss) on Disposition of Business	0	0	(488)
Net (gains) losses on sales and impairments of businesses	465	205	122
Net (gains) losses on sales of equity method investments	(35)	0	0
Antitrust fines	0	32	0
Equity method dividends received	162	273	153
Equity (earnings) losses, net	(77)	(250)	(336)
Other, net	219	120	75
Changes in current assets and liabilities
Accounts and notes receivable	59	246	(342)
Contract assets	35	2	(32)
Inventories	35	(1)	(236)
Accounts payable and accrued liabilities	141	139	151
Interest payable	(55)	(19)	(8)
Other	109	(25)	28
CASH PROVIDED BY (USED FOR) OPERATING ACTIVITIES	3,063	3,610	3,226
INVESTMENT ACTIVITIES
Invested in capital projects, net of insurance recoveries	(751)	(1,276)	(1,572)
Acquisitions, net of cash acquired	(65)	(103)	(8)
Proceeds from sales of equity method investments	500	0	0
Net settlement on transfer of North American Consumer Packaging business	0	0	(40)
Proceeds from sales of businesses, net of cash divested	40	81	0
Proceeds from sale of fixed assets	8	18	23
Other	(1)	(20)	28
CASH PROVIDED BY (USED FOR) INVESTMENT ACTIVITIES	(269)	(1,300)	(1,569)
FINANCING ACTIVITIES
Repurchases of common stock and payments of restricted stock tax withholding	(42)	(535)	(732)
Issuance of debt	583	534	490
Reduction of debt	(2,278)	(1,507)	(1,008)
Change in book overdrafts	35	(66)	(1)
Dividends paid	(806)	(796)	(789)
Net debt tender premiums paid	(188)	(18)	(6)
Other	(4)	(1)	0
CASH PROVIDED BY (USED FOR) FINANCING ACTIVITIES	(2,700)	(2,389)	(2,046)
Cash Included in Assets Held for Sale	(2)	0	0
Effect of Exchange Rate Changes on Cash	(8)	1	(40)
Change in Cash and Temporary Investments	84	(78)	(429)
Cash and Temporary Investments
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance	511	589	1,018
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	$ 595	$ 511	$ 589