RESTRUCTURING AND OTHER CHARGES Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 0
EMEA Industrial Packaging [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges		$ 22

Amount charged against earnings in the period for incurred and estimated costs, excluding asset retirement obligations, associated with exit from or disposal of business activities or restructurings pursuant to a program that is planned and controlled by management, and materially changes either the scope of a business undertaken by an entity, or the manner in which that business is conducted. Also includes expenses charged against earnings in the period of an event that is infrequent in occurrence or unusual in nature.

No definition available.

Name:	ip_RestructuringAndOtherRelatedCharges
Namespace Prefix:	ip_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration