Divestitures and Impairments of Businesses (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations, net of taxes	$ (8)	$ 432	$ 124	$ 82	$ 88	$ 55	$ 15	$ 94	$ 630	$ 252	$ 526
Current assets of discontinued operations	0				1,050				0	1,050
Long-Term Assets of Discontinued Operations	0				1,954				0	1,954
Current liabilities of discontinued operations	0				495				0	495
Long-Term Liabilities of Discontinued Operations	$ 0				369				0	369
Printing Papers [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net (gains) losses on sales of fixed assets		$ (65)
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] | Printing Papers [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales									2,417	3,015	4,059
Cost of products sold									1,508	2,036	2,597
Selling and administrative expenses									224	165	199
Depreciation, amortization and cost of timber harvested									113	196	234
Distribution expenses									229	264	310
Taxes other than payroll and income taxes									24	35	38
Restructuring and other charges, net									0	0	6
Net (gains) losses on sales of fixed assets									(86)	0	0
Net (gains) losses on sales and impairments of businesses									(351)	0	0
Interest expense, net									(19)	(2)	(7)
Earnings (Loss) Before Income Taxes and Equity Earnings									775	321	682
Income tax provision (benefit)									145	69	156
Discontinued operations, net of taxes									630	252	526
Cash and temporary investments					127					127
Accounts and notes receivable					432					432
Contract assets					24					24
Inventories					424					424
Other current assets					43					43
Current assets of discontinued operations					1,050					1,050
Plants, Properties and Equipment					1,272					1,272
Forestlands					293					293
Goodwill					200					200
Right of Use Assets					73					73
Deferred Charges and Other Assets					116					116
Long-Term Assets of Discontinued Operations					1,954					1,954
Notes payable and current maturities of long-term debt					4					4
Accounts payable					285					285
Accrued payroll and benefits					56					56
Other current liabilities					150					150
Current liabilities of discontinued operations					495					495
Long-Term Debt					22					22
Deferred Income taxes					171					171
Pension Benefit Obligation					24					24
Postretirement and Postemployment Benefit Obligation					17					17
Long-Term Lease Obligations					59					59
Other Liabilities					76					76
Long-Term Liabilities of Discontinued Operations					$ 369					369
Cash Provided by (Used For) Operating Activities									290	463	831
Cash Provided by (Used For) Investment Activities									$ 757	$ (111)	$ (147)