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Commiments and Contingencies Commiments and Contingencies (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loss Contingencies [Line Items] |  |
Total contingencies | $ 9 | $ 10
Current portion (included in other current liabilities) | (2) | (2)
Long-term portion (included in other long-term liabilities) | 7 | 8
Environmental reserves |  |
Loss Contingencies [Line Items] |  |
Total contingencies | 9 | 10
Other reserves |  |
Loss Contingencies [Line Items] |  |
Total contingencies | $ 0 | $ 0

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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349 + Details
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- Definition Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349 + Details
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