Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounts, Notes, Loans and Financing Receivable [Line Items]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Receivables consisted of the following:

	December 31,
Dollar amounts in millions	2019			2018
Trade receivables	$	111		$	88
Income tax receivable	35			16
Other receivables	19			25
Allowance for doubtful accounts	(1		)	(1		)
	$	164		$	128

Schedule of Inventory, Current [Table Text Block]

Inventory

Inventories are valued at the lower of cost or net realizable value. Inventory costs include materials, labor, and operating overhead. The LIFO (last-in, first-out) method is used for a minor portion of our log inventories with the remaining inventories valued at FIFO (first-in, first-out) or average cost. Included in the inventory balance is a lower cost of market adjustment of $13 million as of December 31, 2019, and $11 million as of December 31, 2018. Inventory consisted of the following:

	December 31,
Dollar amounts in millions	2019		2018
Logs	$	47	$	57
Other raw materials	32		25
Semi-finished inventory	26		23
Finished products	160		168
Total	$	265	$	273

Depreciation expense [Table Text Block]

Depreciation expense is included in our Consolidated Statements of Income as noted below:

Dollar amounts in millions	Years ended December 31,
	2019		2018		2017
Cost of sales	$	120	$	117	$	120
Selling, general and administrative expenses	3		3		3
Total depreciation and amortization	$	123	$	120	$	123

Property, Plant and Equipment [Table Text Block]

Property, plant, and equipment, including capitalized interest, are recorded at cost and consisted of the following:

Dollar amounts in millions	December 31,
	2019			2018
Property, plant, and equipment, at cost:
Land, land improvements, and logging roads, net of road amortization	$	168		$	169
Buildings	350			330
Machinery and equipment	1,965			1,949
Construction in progress	46			148
	2,529			2,596
Accumulated depreciation	(1,564		)	(1,586		)
Property, plant, and equipment, net	$	965		$	1,010