EQUITY Phantom (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Equity [Line Items]
Common stock dividends, per share	$ 0.5000	$ 0.4750	$ 1.0000	$ 0.9500
Total International Paper Shareholders’ Equity
Equity [Line Items]
Common stock dividends, per share	0.5000	0.4750	1.0000	0.9500
Noncontrolling Interests
Equity [Line Items]
Common stock dividends, per share	$ 0.5000	$ 0.4750	$ 1.0000	$ 0.9500