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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Schedule of Supplemental Cash Flow [Line Items] |  |  |  |  |
Insured Event, Gain (Loss) | $ 0 | $ 0 | $ 65 |  | $ 0
Other current assets |  |  | (93) | [1] | 25
Other noncurrent assets |  |  | 25 |  | 7
Payables and other current liabilities |  |  | 28 |  | 2
Long-term liabilities and equity |  |  | (35) |  | (13)
Total |  |  | (75) |  | $ 21
Other Current Assets [Member] |  |  |  |  |
Schedule of Supplemental Cash Flow [Line Items] |  |  |  |  |
Insured Event, Gain (Loss) |  |  | $ 65 |  |
[1] | First nine months 2018 includes a $65 million insurance receivable from final settlement of the coal gasification incident.

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