EQUITY Phantom (Details) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Equity [Line Items]
Common stock dividends, per share	$ 0.9500	$ 0.9250
Total International Paper Shareholders’ Equity
Equity [Line Items]
Common stock dividends, per share	0.9500	0.9250
Noncontrolling Interests
Equity [Line Items]
Common stock dividends, per share	$ 0.9500	$ 0.9250