REVENUE RECOGNITION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Revenue from External Customer [Line Items]
NET SALES	$ 794	$ 933	$ 1,615	$ 1,838
Other Current Liabilities
Revenue from External Customer [Line Items]
Contract liabilities	4		4		$ 2
Europe Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	181	205	371	412
Latin America Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	194	235	387	443
North America Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	419	493	857	983
Uncoated Papers | Europe Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	162	180	332	366
Uncoated Papers | Latin America Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	181	220	361	416
Uncoated Papers | North America Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	398	474	814	945
Market Pulp | Europe Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	19	25	39	46
Market Pulp | Latin America Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	13	15	26	27
Market Pulp | North America Segment [Member]
Revenue from External Customer [Line Items]
NET SALES	$ 21	$ 19	$ 43	$ 38