Acquisitions And Joint Ventures (Narrative) (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
		Jan. 31, 2013	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	May. 02, 2014	Apr. 08, 2014	Jan. 14, 2013	Jan. 02, 2013
Business Acquisition [Line Items]
Net bargain purchase gain on acquisition of business				$ 0	$ 0	$ 13
Acquisition of redeemable noncontrolling interest				0	114	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	[1]			$ (268)	$ (225)	(317)
Olmuksan Joint Venture [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners							12.60%
Percentage of interest acquired					91.70%					87.40%
Payments to acquire businesses, gross		$ 56
Equity interest in acquiree					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			$ 11		(9)
Redeemable noncontrolling interest					168	$ 163
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax					14
Net assets acquired less noncontrolling interest									$ 471
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.