INFORMATION BY INDUSTRY SEGMENT, ASSETS (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 41,168	$ 22,800
Operating Segments [Member] | Packaging Solutions North America
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	16,564	14,501
Operating Segments [Member] | Packaging Solutions EMEA
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	17,689	1,276
Operating Segments [Member] | Global Cellulose Fibers [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	2,836	2,857
Segment Reporting, Reconciling Item, Corporate Nonsegment | Corporate Segment and Other Operating Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 4,079	$ 4,166