(Schedule of Income Before Income Tax, Domestic and Foreign) (Details) - USD ($) $ in Millions	3 Months Ended																12 Months Ended
	Dec. 31, 2022	[1]	Sep. 30, 2022	[1]	Jun. 30, 2022	[1]	Mar. 31, 2022	[1]	Dec. 31, 2021	[2]	Sep. 30, 2021	[2]	Jun. 30, 2021	[2]	Mar. 31, 2021	[2]	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Income Tax Disclosure [Abstract]
U.S.																	$ 1,469		$ 906		$ 660
Non-U.S.																	42		93		(331)
Earnings (loss) from continuing operations before income taxes and equity earnings	$ 322		$ 313		$ 514		$ 362		$ 44		$ 397		$ 252		$ 306		$ 1,511	[1]	$ 999	[2]	$ 329

[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