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Other Income and Expense - Other Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Schedule of Other Nonoperating Income [Line Items] |  |  |  |  |  |  |
Other Nonoperating Income | $ 6 | $ 78 |  | $ 60 |  | $ 126 |
Other Income [Member] |  |  |  |  |  |  |
Schedule of Other Nonoperating Income [Line Items] |  |  |  |  |  |  |
Gain on sale of assets (1) | 0 | 0 |  | 43 | [1] | 0 |
Gain on insurance proceeds (2) | 0 | 73 | [2] | 0 |  | 108 | [2]
Other income | 6 | 5 |  | 17 |  | 18 |
Other Nonoperating Income | $ 6 | $ 78 |  | $ 60 |  | $ 126 |
[1] | Primarily associated with the gain on sale of Redondo Beach land at Southland. See Note 18—Held-for-Sale and Dispositions for further information.
[2] | Associated with recoveries for property damage at the Andres facility in the Dominican Republic from a lightning incident in September 2018 and the upgrade of the tunnel lining at Changuinola.

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- Definition Amount of gain (loss) on sale or disposal of other assets. + 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 http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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