Document and Entity Information	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jul. 31, 2013
Document Information [Line Items]
Document Type		10-Q
Amendment Flag		false
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus		2013
Document Fiscal Period Focus		Q2
Trading Symbol		IP
Entity Registrant Name		INTERNATIONAL PAPER CO /NEW/
Entity Central Index Key		0000051434
Current Fiscal Year End Date		--12-31
Entity Filer Category		Large Accelerated Filer
Entity Common Stock, Shares Outstanding			445,958,910