RELATED PARTY TRANSACTIONS - Summary of Components of Net Transfers From (To) Parent (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Related Party Transaction [Line Items]
Net transfers from Parent		$ 82
Affiliated Entity | International Paper
Related Party Transaction [Line Items]
Net transfers from Parent	$ 0	82
Affiliated Entity | General financing activities | International Paper
Related Party Transaction [Line Items]
Net transfers from Parent	0	41
Affiliated Entity | Corporate allocations | International Paper
Related Party Transaction [Line Items]
Net transfers from Parent	0	38
Affiliated Entity | Stock-based compensation | International Paper
Related Party Transaction [Line Items]
Net transfers from Parent	$ 0	$ 3