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Divestitures, Asset Impairments and Unusual Items (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2022 | Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Asset Impairments and Unusual Items |  |  |  |  |
(Gain) loss from divestitures, asset impairments and unusual items, net |  | $ (34) |  | $ 17 | $ (17)
Increase in legal accruals |  |  |  |  | 20
Asset impairments |  |  |  |  | $ 6
Gain (loss) on sale of assets |  | $ 35 | $ 8 |  |
San Jacinto Waste Pits [Member] |  |  |  |  |
Asset Impairments and Unusual Items |  |  |  |  |
Revisions in estimates and interest rate assumptions | $ 17 |  |  | $ 17 |

X
- Definition Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q1) -URI https://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition The aggregate amount of asset impairment charges, (gains) and losses related to the divestiture of businesses and unusual items incurred during an accounting period. + References No definition available. + Details
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