Supplementary Financial Statement Information (Inventories By Major Category) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure Text Block Supplement [Abstract]
Raw materials	$ 260	$ 274
Finished pulp, paper and packaging products	1,241	1,337
Operating supplies	641	615
Other	99	87
Inventories	$ 2,241	$ 2,313

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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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