BUSINESS SEGMENTS Reconciliation of Business Segment Information in Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	$ 1,728	$ 1,643
Net contribution (charge) to earnings	232	(286)
Interest expense, net of capitalized interest	(85)	(107)
Earnings (loss) before income taxes	147	(393)
Income taxes	3	104
Net earnings (loss)	150	(289)
Operating Segments
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	1,850	1,768
Net contribution (charge) to earnings	275	244
Intersegment eliminations
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	(122)	(125)
Unallocated items
Segment Reporting, Revenue Reconciling Item
Net contribution (charge) to earnings	(43)	(530)
Timberlands
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	381	431
Timberlands \| Operating Segments
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	381	431
Net contribution (charge) to earnings	105	120
Timberlands \| Intersegment eliminations
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	122	125
Real Estate & ENR
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	112	118
Real Estate & ENR \| Operating Segments
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	112	118
Net contribution (charge) to earnings	36	55
Wood Products
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	1,235	1,094
Wood Products \| Operating Segments
Segment Reporting, Revenue Reconciling Item
Sales to unaffiliated customers	1,235	1,094
Net contribution (charge) to earnings	$ 134	$ 69

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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