Consolidated Statement of Operations - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Sales	[1]	$ 5,714	$ 5,123	$ 16,693	$ 15,341
Costs and Expenses
Cost of products sold		3,924	3,541	11,684	10,714
Selling and administrative expenses		434	360	1,255	1,110
Depreciation, amortization and cost of timber harvested		318	320	933	955
Distribution expenses		446	377	1,272	1,149
Taxes other than payroll and income taxes		42	44	131	129
Restructuring and other charges, net		39	105	243	131
Net (gains) losses on sales and impairments of businesses		(360)	(5)	(367)	347
Net (gains) losses on sales of equity method investments		(1)	(2)	(205)	(35)
Net (gains) losses on sales of fixed assets		(86)	0	(86)	0
Interest expense, net		93	112	242	345
Non-operating pension expense (income)		(51)	(11)	(156)	(31)
Earnings (loss) before income taxes and equity earnings		916	282	1,747	527
Income tax provision (benefit)		146	50	347	211
Equity earnings (loss), net of taxes		94	(28)	247	13
Net earnings (loss)		864	204	1,647	329
Net Income (Loss) Attributable to Noncontrolling Interest		0	0	2	0
Net Earnings (Loss) Attributable to International Paper Company		$ 864	$ 204	$ 1,645	$ 329
Basic Earnings (Loss) Per Share Attributable to International Paper Company Common Shareholders
Basic earnings (loss) per share attributable to International Paper Company Common Shareholders		$ 2.22	$ 0.52	$ 4.21	$ 0.84
Diluted Earnings (Loss) Per Share Attributable to International Paper Company Common Shareholders
Diluted earnings (loss) per share attributable to International Paper Company Common Shareholders		$ 2.20	$ 0.52	$ 4.16	$ 0.83
Average Shares of Common Stock Outstanding – assuming dilution		392.6	394.6	395.3	394.5

[1] Net sales are attributed to countries based on the location of the seller.