Acquisitions And Joint Ventures (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended						1 Months Ended	3 Months Ended		6 Months Ended	0 Months Ended	3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Jan. 31, 2013	Sep. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Feb. 13, 2012 T	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Mar. 31, 2012	Jan. 02, 2013	Apr. 08, 2014	Jan. 14, 2013
Business Acquisition [Line Items]
Net bargain purchase gain on acquisition of business	$ 0		$ 13		$ 0
Acquisition of redeemable noncontrolling interest	114		0		0
Redeemable noncontrolling interest	0		163									0		163
Reclassification from accumulated other comprehensive income, current period, net of tax	225	[1]	317	[1]	182	[1]
Olmuksan Joint Venture [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			12.60%											12.60%
Percentage of interest acquired	91.70%											91.70%							87.40%
Payments to acquire businesses, gross							56
Equity interest in acquiree			43.70%											43.70%					43.70%
Fair value of equity interest in acquiree																			75
Remeasurement gain			9
Foreign currency transaction gain (loss), realized	(17)
Net bargain purchase gain on acquisition of business	21
Net assets acquired less noncontrolling interest																			155
Orsa IP [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																				25.00%
Percentage of interest acquired																					75.00%
Payments to acquire businesses, gross									127
Acquisition of redeemable noncontrolling interest									105
FDIC Indemnification Asset, Acquisitions																				22
Increase (Decrease) in Restricted Cash								9	(11)
Redeemable noncontrolling interest			163						168	168				163
Reclassification from accumulated other comprehensive income, current period, net of tax										14
Net assets acquired less noncontrolling interest																					471
Temple Inland Inc [Member]
Business Acquisition [Line Items]
Payments to acquire businesses, gross											3,700
Outstanding common stock acquired, price per share											$ 32.00
Acquisition of business, debt assumed											700
Mills required to be divested											3
Tons of aggregate capacity to be divested											970,000
Inventory write up																		20
Inventory write up after taxes																		12
Integration related costs	16		62		164			1	2			1	12	12	24	14	12
Integration related costs, after taxes	10		38		105			1	1			1	7	7	15	8	8
International Paper [Member] | Orsa IP [Member]
Business Acquisition [Line Items]
Increase (Decrease) in Restricted Cash								$ 2

[1] All amounts are net of tax. Amounts in parentheses indicate debits to AOCI.