REVENUE RECOGNITION Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Net sales	[1]	$ 5,402	$ 4,914	$ 16,028	$ 14,277
Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		130	63	361	191
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		(25)	(34)	(102)	(87)
North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		4,055	3,814	12,206	11,037
EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		355	331	1,178	1,121
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales		887	740	2,385	2,015
United States
Disaggregation of Revenue [Line Items]
Net sales		4,791	4,316	14,037	12,344
United States | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		129	51	358	141
EMEA
Disaggregation of Revenue [Line Items]
Net sales		384	358	1,262	1,190
EMEA | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		0	(1)	0	(3)
Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales		25	58	77	167
Pacific Rim and Asia | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		1	8	3	32
Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales		202	182	652	576
Americas, other than U.S. | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		0	5	0	21
Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		4,385	4,111	13,282	12,071
Industrial Packaging | Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		4,385	4,111	13,282	12,071
Industrial Packaging | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales		4,385	4,111	13,282	12,071
Industrial Packaging | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		(25)	(34)	(102)	(87)
Industrial Packaging | North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		4,055	3,814	12,206	11,037
Industrial Packaging | EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		355	331	1,178	1,121
Industrial Packaging | United States
Disaggregation of Revenue [Line Items]
Net sales		3,816	3,590	11,419	10,352
Industrial Packaging | EMEA
Disaggregation of Revenue [Line Items]
Net sales		355	331	1,178	1,119
Industrial Packaging | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales		12	13	33	45
Industrial Packaging | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales		202	177	652	555
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales		887	740	2,385	2,015
Global Cellulose Fibers | Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		887	740	2,385	2,015
Global Cellulose Fibers | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales		887	740	2,385	2,015
Global Cellulose Fibers | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales		887	740	2,385	2,015
Global Cellulose Fibers | United States
Disaggregation of Revenue [Line Items]
Net sales		846	675	2,260	1,851
Global Cellulose Fibers | EMEA
Disaggregation of Revenue [Line Items]
Net sales		29	28	84	74
Global Cellulose Fibers | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales		12	37	41	90
Global Cellulose Fibers | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales		$ 0	$ 0	$ 0	$ 0

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