Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 1,754	$ 482	$ 1,220
Net gains/losses on cash flow hedging derivatives:	3	(34)	4
Reclassification adjustment for (gains) losses included in net earnings (less tax of $2, $13 and $2)	(9)	26	4
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Change in cumulative foreign currency translation adjustment (less tax of $0, $1 and $1)	69	8	116
Net gains/losses on cash flow hedging derivatives:
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	901	397	290
Comprehensive income (loss)	2,655	879	1,510
Net (Earnings) Loss Attributable to Noncontrolling Interests	(2)	0	5
Other Comprehensive (Income) Loss Attributable to Noncontrolling Interests	2	0	0
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY	2,655	879	1,515
Domestic Plan [Member]
Amortization of pension and postretirement prior service costs and net loss:	124	170	163
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Pension and postretirement liability adjustments:	706	229	22
Non-U.S. Plans
Amortization of pension and postretirement prior service costs and net loss:	1	0	1
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Pension and postretirement liability adjustments:	$ 7	$ (2)	$ (20)