(Plants, Properties And Equipment By Major Classification) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Gross cost	$ 29,711	$ 28,802
Less: Accumulated depreciation	19,561	18,371
Plants, properties and equipment, net	10,150	10,431
Pulp and packaging facilities
Property, Plant and Equipment [Line Items]
Gross cost	28,661	27,773
Other properties and equipment
Property, Plant and Equipment [Line Items]
Gross cost	$ 1,050	$ 1,029