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Committments and Contingent Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Loss Contingencies [Line Items] |  |  |
Loss Contingency Accrual | $ 10 | $ 11 |
Loss Contingency, Accrual, Current | 2 | 2 |
Loss Contingency, Accrual, Noncurrent | 8 | 9 |
SEC Schedule, 12-09, Reserve, Environmental Cost [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss Contingency Accrual | 10 | 11 | $ 15
Loss Contingency Accrual, Period Increase (Decrease) | (1) | 2 |
Payments for Environmental Liabilities | 1 | 2 |
Accrual for Environmental Loss Contingencies, Foreign Currency Translation Gain (Loss) | 0 | 0 |
Hardboard Siding Reserves |  |  |
Loss Contingencies [Line Items] |  |  |
Loss Contingency Accrual | $ 0 | $ 0 |

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- Definition Amount of foreign currency translation gain (loss) which decreases (increases) the accrual for environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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- Definition Cash outflows made during the period for environmental remediation activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585 + Details
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