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Other Income and Expense - Other Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Schedule of Other Nonoperating Income [Line Items] |  |  |  |  |  |
Other income | $ 18 |  | $ 7 | $ 48 |  | $ 20
Other Income [Member] |  |  |  |  |  |
Schedule of Other Nonoperating Income [Line Items] |  |  |  |  |  |
Gain on insurance proceeds (1) | 12 | [1] | 0 | 35 | [1] | 0
Allowance for funds used during construction (US Utilities) | 1 |  | 2 | 2 |  | 7
Other income | 5 |  | 5 | 11 |  | 13
Other Nonoperating Income | $ 18 |  | $ 7 | $ 48 |  | $ 20
[1] | (1) Associated with recoveries for property damage at the Andres facility in the Dominican Republic for a lightning incident that occurred in September 2018.

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- Definition Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355 + Details
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