Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Earnings (Loss)	$ 562	$ 395	$ 1,699	$ 684
Other Comprehensive Income (Loss), Net of Tax:
Change in cumulative foreign currency translation adjustment	(87)	100	(467)	234
Net gains/losses on cash flow hedging derivatives:
Net gains (losses) arising during the period	1	1	(20)	9
Reclassification adjustment for (gains) losses included in net earnings (loss)	2	(2)	2	(6)
Total Other Comprehensive Income (Loss), Net of Tax	(8)	158	(258)	414
Comprehensive Income (Loss)	554	553	1,441	1,098
Net (earnings) loss attributable to noncontrolling interests	0	0	(3)	0
Other comprehensive (income) loss attributable to noncontrolling interests	2	1	4	(1)
Comprehensive Income (Loss) Attributable to International Paper Company	556	554	1,442	1,097
U.S. plans
Other Comprehensive Income (Loss), Net of Tax:
Amortization of pension and post-retirement prior service costs and net loss:	76	59	227	176
Non-U.S. plans
Other Comprehensive Income (Loss), Net of Tax:
Pension and postretirement liability adjustments:	$ 0	$ 0	$ 0	$ 1