Financial Information By Industry Segment And Geographic Area (Operating Profit By Industry Segment) (Details) - USD ($) $ in Millions		3 Months Ended															12 Months Ended
		Dec. 31, 2015	[2]	Sep. 30, 2015	[2]	Jun. 30, 2015	[2]	Mar. 31, 2015	Dec. 31, 2014	[3]	Sep. 30, 2014	[3]	Jun. 30, 2014	[3]	Mar. 31, 2014	[3]	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Operating income (loss)																	$ 2,361		$ 2,058		$ 2,233
Interest expense, net																	(555)		(607)		(612)
Noncontrolling interests / equity earnings adjustment	[1]																(8)		(2)		1
Corporate items, net																	(36)		(51)		(61)
Restructuring and other charges																	(238)		(282)		(10)
Net gains (losses) on sales and impairments of businesses																	0		(38)		0
Non-operating pension expense																	(258)		(212)		(323)
Earnings (loss) from continuing operations before income taxes and equity earnings		$ 265		$ 329		$ 266		$ 406	$ 307		$ 552		$ 152		$ (139)		1,266	[2]	872	[3]	1,228
Industrial Packaging [Member]
Segment Reporting Information [Line Items]
Operating income (loss)																	1,853		1,896		1,801
Printing Papers [Member]
Segment Reporting Information [Line Items]
Operating income (loss)																	533		(16)		271
Consumer Packaging [Member]
Segment Reporting Information [Line Items]
Operating income (loss)																	(25)		178		161
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Interest expense, net																	$ (555)		$ (601)		$ (612)

[1] Operating profits for industry segments include each segment’s percentage share of the profits of subsidiaries included in that segment that are less than wholly-owned. The pre-tax noncontrolling interests and equity earnings for these subsidiaries is added here to present consolidated earnings from continuing operations before income taxes and equity earnings.

[2] Includes the following pre-tax charges (gains): 2015In millions Q1 Q2 Q3 Q4Riegelwood mill conversion costs, net of proceeds from sale of the Carolina Coated Bristols brand $— $(14) $7 $15Timber monetization restructuring — — 17 (1)Early debt extinguishment costs — 207 — —Refund and state tax credits — (4) — —IP-Sun JV impairment — — 186 (12)Legal reserve adjustment — — — 15Impairment of Orsa goodwill and trade name intangible — — — 137Other items — 1 1 4Total $— $190 $211 $158

[3] Includes the following pre-tax charges (gains): 2014 Q1 Q2 Q3 Q4Temple-Inland integration $12 $2 $1 $1Courtland mill shutdown 495 49 3 7Early debt extinguishment costs — 262 13 1India legal contingency resolution — — (20) —Multi-employer pension plan withdrawal liability — — 35 —Foreign tax amnesty program — — 32 —Asia Industrial Packaging goodwill impairment — — — 100Loss on sale by investee and impairment of investment — — — 47Other items 4 (4) 13 (1)Total $511 $309 $77 $155