(Restructuring and Related Costs Tables) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net		$ 99		$ 89	$ 509
Restructuring and other charges, net		99		89	509
Early debt extinguishment costs (see Note 13)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net				93	461
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net				$ (4)	7
EMEA Industrial Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	[1]				12
Building a Better IP
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net		(19)	[2]		$ 29	[3]
Orange, Texas mill
Restructuring Cost and Reserve [Line Items]
Severance costs		25
Inventory Write-down		30
Restructuring and other charges, net		26
Orange, Texas mill | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	[4]	81
Pensacola Mill and Riegelwood Mill
Restructuring Cost and Reserve [Line Items]
Severance costs		21
Inventory Write-down		12
Restructuring and other charges, net		4
Pensacola Mill and Riegelwood Mill | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	[5]	$ 37

[1] Severance related to the optimization of our EMEA Packaging business. All severance has been paid as of December 31, 2023.

[2] Revision of severance estimates related to our Building a Better IP initiative.

[3] Severance related to our Building a Better IP initiative which is focused on value creation through streamlined operations and process optimization. All severance has been paid as of December 31, 2023.

[4] Includes $25 million of severance charges, $30 million of inventory impairment charges and $26 million of other costs associated with the closure of our containerboard mill in Orange, Texas. The majority of the severance charges will be paid in 2024.

[5] Includes $21 million of severance charges, $12 million of inventory impairment charges and $4 million of other costs associated with the permanent shutdown of pulp machines at our Riegelwood, North Carolina and Pensacola, Florida mills. The majority of the severance charges will be paid in 2024.