Restructuring and Related Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	$ 56	$ 0	$ 59	$ 0
North American Industrial Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			3
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	56		$ 56
Employee Severance | Corporate Segment
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	38
Employee Severance | Industrial Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	17
Employee Severance | Global Cellulose Fibers [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	$ 1