COMMITMENTS AND CONTINGENCIES Environmental Remediation Obligations (Details) € in Millions, $ in Millions		3 Months Ended			12 Months Ended
	Oct. 11, 2024 USD ($)	Mar. 31, 2025 USD ($) Producers	Dec. 31, 2024 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)
Loss Contingencies [Line Items]
Liability for Asbestos and Environmental Claims, Gross		$ 284	$ 279		$ 279
Liability for Asbestos and Environmental Claims, Net		$ 100	100		100
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)					6	€ 6
Secretariat of the Federal Revenue Bureau of Brazil [Member]
Loss Contingencies [Line Items]
Responsible party percentage		60.00%
Loss Contingency Accrual		$ 48
Income tax examination, estimate of possible loss	$ 230	363		$ 103
Income tax examination, penalties and interest expense		$ 260
Responsible party percentage-Sylvamo		40.00%
Shared Tax Assessment Payment		$ 300
Italian Competition Authority [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Defendants | Producers		30
Loss Contingency Accrual									$ 29	€ 31
Cass Lake, Minnesota
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies		$ 48	48		48
Kalamazoo River Superfund Site
Loss Contingencies [Line Items]
Loss contingency, damages sought, value								$ 37
Liability for Asbestos and Environmental Claims, Net, Period Increase (Decrease)			27
Liability for Asbestos and Environmental Claims, Net		29	29		29
Kalamazoo River Superfund Site | Georgia-Pacific Consumer Products LP, Fort James Corporation and Georgia Pacific LLC Cost Recovery Action
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		79
Loss Contingency, damages awarded, value		$ 50
Loss Contingencies, Share of Damages		15.00%
San Jacinto River Superfund Site
Loss Contingencies [Line Items]
Liability for Asbestos and Environmental Claims, Net		$ 98	98		98
Responsible party percentage		50.00%
San Jacinto River Superfund Site | Southern Impoundment [Member]
Loss Contingencies [Line Items]
Liability for Asbestos and Environmental Claims, Net, Period Increase (Decrease)							$ 10
San Jacinto River Superfund Site | Northern impoundment [Member]
Loss Contingencies [Line Items]
Liability for Asbestos and Environmental Claims, Net, Period Increase (Decrease)							$ 55
Versailles Pond
Loss Contingencies [Line Items]
Liability for Asbestos and Environmental Claims, Net		$ 29	$ 30		$ 30