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Inventories - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Public Utilities, Inventory [Line Items] |  |  |
Impairment recognized due to lower than cost or market adjustments | $ 42 | $ 0 | $ 54
Commodity Inventories |  |  |
Public Utilities, Inventory [Line Items] |  |  |
Impairment recognized due to lower than cost or market adjustments | $ 7 | $ 0 | $ 76

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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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