Supplementary Financial Statement Information (Inventories By Major Category) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Supplementary Financial Statement Information [Abstract]
Raw materials	$ 339	$ 494
Finished pulp, paper and packaging products	1,248	1,273
Operating supplies	563	562
Other	78	95
Inventories	$ 2,228	$ 2,424

Supplementary Financial Statement Information [Abstract]

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

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Carrying amount, net of valuation reserves and allowances, as of the balance sheet date of inventories not otherwise specified in the taxonomy.

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