REVENUE RECOGNITION Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	[1]	$ 5,020	$ 5,237
Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		126	121
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		(32)	(29)
North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		3,724	4,025
EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		391	410
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales		811	710
United States
Disaggregation of Revenue [Line Items]
Net sales		4,311	4,543
United States | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		126	120
EMEA
Disaggregation of Revenue [Line Items]
Net sales		416	440
EMEA | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		0	0
Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales		64	29
Pacific Rim and Asia | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		0	1
Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales		229	225
Americas, other than U.S. | Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Net sales		0	0
Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		4,083	4,406
Industrial Packaging | Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		4,083	4,406
Industrial Packaging | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales		4,083	4,406
Industrial Packaging | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		(32)	(29)
Industrial Packaging | North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		3,724	4,025
Industrial Packaging | EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales		391	410
Industrial Packaging | United States
Disaggregation of Revenue [Line Items]
Net sales		3,455	3,761
Industrial Packaging | EMEA
Disaggregation of Revenue [Line Items]
Net sales		391	410
Industrial Packaging | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales		8	10
Industrial Packaging | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales		229	225
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales		811	710
Global Cellulose Fibers | Geography Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales		811	710
Global Cellulose Fibers | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales		811	710
Global Cellulose Fibers | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales		811	710
Global Cellulose Fibers | United States
Disaggregation of Revenue [Line Items]
Net sales		730	662
Global Cellulose Fibers | EMEA
Disaggregation of Revenue [Line Items]
Net sales		25	30
Global Cellulose Fibers | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales		56	18
Global Cellulose Fibers | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales		$ 0	$ 0

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