Financial Information By Business Segment And Geographic Area (Information By Geographic Area, Net Sales Footnotes) (Details) - USD ($)
$ in Millions |
3 Months Ended |
12 Months Ended |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Segment Reporting Information [Line Items] |
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| Revenue from contract with customer, including assessed tax |
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$ 5,498
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$ 5,568
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$ 5,667
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$ 5,643
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$ 5,951
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$ 5,901
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$ 5,833
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$ 5,621
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$ 22,376
|
[1] |
$ 23,306
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[1] |
$ 21,743
|
[1] |
| Corporate special items |
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$ 3
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$ 1
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104
|
[2] |
9
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[2] |
76
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[2] |
| Depreciation, amortization and cost of timber harvested |
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1,306
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1,328
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1,343
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| External sales by reportable segment |
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22,376
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23,306
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21,743
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| United States |
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| Segment Reporting Information [Line Items] |
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| Segment reporting information, unaffiliated revenue |
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2,700
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3,100
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2,900
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| Corporate (c) |
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| Segment Reporting Information [Line Items] |
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| Depreciation, amortization and cost of timber harvested |
[3] |
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5
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5
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10
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| Corporate and Other | Corporate (c) |
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| Segment Reporting Information [Line Items] |
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| External sales by reportable segment |
[4] |
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$ 288
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$ 309
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131
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| Previously Divested Businesses [Member] |
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| Segment Reporting Information [Line Items] |
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| Revenue from contract with customer, including assessed tax |
[2] |
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15
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| Operating income (loss) |
[2] |
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0
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| Corporate special items |
[2] |
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9
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| Previously Divested Businesses [Member] | Corporate (c) |
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| Segment Reporting Information [Line Items] |
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| Depreciation, amortization and cost of timber harvested |
[3],[4] |
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1
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| Previously Divested Businesses [Member] | Corporate and Other | Corporate (c) |
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| Segment Reporting Information [Line Items] |
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| External sales by reportable segment |
[1] |
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$ 15
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