BUSINESS SEGMENT INFORMATION, CAPITAL EXPENDITURES (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Capital Expenditures	$ 752	$ 449
Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Capital Expenditures	736	436
Operating Segments | Packaging Solutions North America
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Capital Expenditures	401	343
Operating Segments | Packaging Solutions EMEA
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Capital Expenditures	265	25
Operating Segments | Global Cellulose Fibers
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Capital Expenditures	70	68
Corporate and other
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Capital Expenditures	$ 16	$ 13