EQUITY METHOD INVESTMENTS Summarized Financial Information of Equity Method Investees (Details) - Reportable Subsegments - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Graphic Packaging LLC [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	$ 1,765		$ 1,765		$ 1,757
Noncurrent assets	5,419		5,419		5,292
Current liabilities	1,067		1,067		1,148
Noncurrent liabilities	3,325		3,325		3,156
Net sales	1,581	$ 1,530	4,640	$ 4,515
Gross profit	266	256	820	714
Income from continuing operations	83	135	283	278
Net income	83	135	283	278
Ilim Holding
Schedule of Equity Method Investments [Line Items]
Current assets	749		749		981
Noncurrent assets	2,392		2,392		1,710
Current liabilities	947		947		545
Noncurrent liabilities	1,509		1,509		1,470
Noncontrolling interests	22		22		$ 11
Net sales	479	655	1,692	2,030
Gross profit	196	376	836	1,152
Income from continuing operations	41	149	388	454
Net income	$ 40	$ 143	$ 375	$ 438