Equity Method Investments (Equity Method Investments Table) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Current assets	$ 11,236	$ 6,639
Current liabilities	8,284	8,646
NET EARNINGS (LOSS)	482	1,220	$ 2,017
Reportable Subsegments [Member] | Graphic Packaging LLC [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	2,011	1,796
Noncurrent assets	5,784	5,482
Current liabilities	1,827	1,178
Noncurrent liabilities	3,594	3,244
Net sales	6,560	6,160	6,023
Gross profit	1,100	1,093	946
Income from continuing operations	232	333	336
NET EARNINGS (LOSS)	233	334	337
Reportable Subsegments [Member] | Ilim Holding [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	739	804
Noncurrent assets	2,733	2,813
Current liabilities	674	1,015
Noncurrent liabilities	2,249	1,844
Net sales	2,015	2,189	2,713
Gross profit	838	1,025	1,549
Income from continuing operations	115	438	592
NET EARNINGS (LOSS)	113	424	$ 571
Noncontrolling interests	$ 17	$ 16