SUMMARY OF BUSINESS AND BASIS OF PRESENTATION - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from External Customer [Line Items]
Net sales	$ 1,278	$ 1,359	$ 2,444
End-users and Converters
Revenue from External Customer [Line Items]
Net sales	402	476	1,119
Brokers and Merchants
Revenue from External Customer [Line Items]
Net sales	664	641	936
Printers
Revenue from External Customer [Line Items]
Net sales	212	242	389
Paper
Revenue from External Customer [Line Items]
Net sales	1,118	1,175	2,224
Pulp
Revenue from External Customer [Line Items]
Net sales	133	118	117
Packaging
Revenue from External Customer [Line Items]
Net sales	$ 27	$ 66	$ 103