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Other Income and Expense - Other Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Schedule of Other Nonoperating Income [Line Items] |  |  |  |  |  |
Other income | $ 78 |  | $ 10 | $ 126 |  | $ 30
Other Income [Member] |  |  |  |  |  |
Schedule of Other Nonoperating Income [Line Items] |  |  |  |  |  |
Gain on insurance proceeds (1) | 73 | [1] | 0 | 108 | [1] | 0
Allowance for funds used during construction (US Utilities) | 1 |  | 1 | 3 |  | 8
Other income | 4 |  | 9 | 15 |  | 22
Other Nonoperating Income | $ 78 |  | $ 10 | $ 126 |  | $ 30
[1] | (1) 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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