(Operating Profit By Industry Segment) (Details) - USD ($) $ in Millions		3 Months Ended																12 Months Ended
		Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2021		Sep. 30, 2021		Jun. 30, 2021		Mar. 31, 2021		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Segment Reporting Information [Line Items]
Earnings (loss) from continuing operations before income taxes and equity earnings		$ 322	[1]	$ 313	[1]	$ 514	[1]	$ 362	[1]	$ 44	[2]	$ 397	[2]	$ 252	[2]	$ 306	[2]	$ 1,511	[1]	$ 999	[2]	$ 329
Interest expense, net																		325		337		446
Adjustment for less than wholly owned subsidiaries (b)	[3]																	(5)		(5)		0
Corporate expenses, net (a)	[4]																	34		134		62
Corporate net special items																		99		352		262
Business net special items																		76		18		481
Non-operating pension (income) expense		$ (48)		$ (48)		$ (47)		$ (49)		$ (47)		$ (50)		$ (51)		$ (52)		(192)		(200)		(41)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Business Segment Operating Profit																		1,848		1,635		1,539
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Business Segment Operating Profit																		1,742		1,638		1,757
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Business Segment Operating Profit																		$ 106		$ (3)		$ (218)

[1] (a) Includes the following pre-tax charges (gains): 2022In millionsQ1Q2Q3Q4Debt extinguishment costs$— $— $93 $— EMEA Packaging goodwill impairment— — — 76 Foreign currency cumulative translation loss related to sale of equity method investment— — — 10 Timber monetization settlement interest— — 55 3 Litigation reserve adjustments— — (15)11 Environmental remediation reserve adjustment— 15 — 48 Sylvamo investment - fair value adjustment(46)(3)(16)— Other items— 6 — (4)Non-operating pension expense(49)(47)(48)(48)Total$(95)$(29)$69 $96 

[2] (d) Includes the following pre-tax charges (gains): 2021In millionsQ1Q2Q3Q4Debt extinguishment costs$18 $170 $35 $238 EMEA Packaging business optimization12 — — — Building a Better IP— — — 29 Legal reserve adjustment— — — (5)Environmental remediation reserve adjustment— 5 5 — Gain on sale of equity investment in Graphic Packaging(74)(130)— — EMEA Packaging impairment - Turkey2 (9)— — Sylvamo investment - fair value adjustment— — — 32 Real estate - office impairment— 21 — — Other items— 11 9 1 Non-operating pension expense(52)(51)(50)(47)Total$(94)$17 $(1)$248 

[3] Operating profits for industry segments include each segment’s percentage share of the profits of subsidiaries included in that segment that are less than wholly-owned. The pre-tax earnings for these subsidiaries is added here to present consolidated earnings from continuing operations before income taxes and equity earnings.

[4] Includes sales of $44 million in 2021 and $56 million in 2020 and operating profit (losses) of $9 million in 2021 and $1 million in 2020, from previously divested businesses. There were no sales or operating profit (losses) from previously divested businesses in 2022.