Goodwill And Other Intangibles (Net Carrying Amount Of Identifiable Intangible Assets, Excluding Goodwill) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Gross Carrying Amount	$ 1,080	[1]	$ 504	[1]
Accumulated Amortization	214	[1]	183	[1]
Customer Relationships And Lists [Member]
Accumulated Amortization	112		82
Noncompete Agreements [Member]
Accumulated Amortization	30		19
Tradename, Patents And Trademarks [Member]
Accumulated Amortization	16		21
Land And Water Rights [Member]
Accumulated Amortization	6		3
Fuel And Power Agreements [Member]
Accumulated Amortization	12		16
Computer Software, Intangible Asset [Member]
Accumulated Amortization	19		29
Other Intangible Assets [Member]
Accumulated Amortization	19		13
Fuel And Power Agreements [Member]
Gross Carrying Amount	17		30
Land And Water Rights [Member]
Gross Carrying Amount	87		60
Tradename Patents And Trademarks [Member]
Gross Carrying Amount	144		51
Noncompete Agreements [Member]
Gross Carrying Amount	83		72
Customer Relationships And Lists [Member]
Gross Carrying Amount	644		227
Other Intangible Assets [Member]
Gross Carrying Amount	83		27
Computer Software, Intangible Asset [Member]
Gross Carrying Amount	$ 22		$ 37

[1] The increase in 2012 is primarily due to the acquisition of Temple-Inland.