RESTRUCTURING CHARGES - Charges Incurred as Included in Restructuring Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring and Related Cost [Abstract]
Restructuring costs	$ 23	$ 12	$ 52
Closure of Duluth Mill
Restructuring and Related Cost [Abstract]
Restructuring costs	12	7
Cumulative incurred	19
Closure of Duluth Mill | Property, plant and equipment, net
Restructuring and Related Cost [Abstract]
Restructuring costs	0	3
Cumulative incurred	3
Closure of Duluth Mill | Severance and benefit costs
Restructuring and Related Cost [Abstract]
Restructuring costs	0	1
Cumulative incurred	1
Closure of Duluth Mill | Write-off of spare parts and inventory
Restructuring and Related Cost [Abstract]
Restructuring costs	0	2
Cumulative incurred	2
Closure of Duluth Mill | Write-off of purchase obligations and commitments
Restructuring and Related Cost [Abstract]
Restructuring costs	10	1
Cumulative incurred	11
Closure of Duluth Mill | Other costs
Restructuring and Related Cost [Abstract]
Restructuring costs	2	0
Cumulative incurred	2
Closure of Luke Mill
Restructuring and Related Cost [Abstract]
Restructuring costs	3	5	52
Cumulative incurred	60
Closure of Luke Mill | Property, plant and equipment, net
Restructuring and Related Cost [Abstract]
Restructuring costs	3	0	10
Cumulative incurred	13
Closure of Luke Mill | Severance and benefit costs
Restructuring and Related Cost [Abstract]
Restructuring costs	0	1	19
Cumulative incurred	18
Closure of Luke Mill | Write-off of spare parts and inventory
Restructuring and Related Cost [Abstract]
Restructuring costs	0	0	9
Cumulative incurred	9
Closure of Luke Mill | Write-off of purchase obligations and commitments
Restructuring and Related Cost [Abstract]
Restructuring costs	0	0	1
Cumulative incurred	1
Closure of Luke Mill | Other costs
Restructuring and Related Cost [Abstract]
Restructuring costs	0	$ 6	$ 13
Cumulative incurred	19
Closure of No. 14 Paper Machine and Certain Other Long-Lived Assets
Restructuring and Related Cost [Abstract]
Restructuring costs	8
Cumulative incurred	8
Closure of No. 14 Paper Machine and Certain Other Long-Lived Assets | Property, plant and equipment, net
Restructuring and Related Cost [Abstract]
Restructuring costs	5
Cumulative incurred	5
Closure of No. 14 Paper Machine and Certain Other Long-Lived Assets | Write-off of spare parts and inventory
Restructuring and Related Cost [Abstract]
Restructuring costs	3
Cumulative incurred	$ 3