Assets Held for Sale - Narrative (Details) - El Arrayan SPA [Member] - Discontinued Operations, Held-for-sale [Member] $ in Millions |
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2018
USD ($)
|
May 21, 2018
USD ($)
km
MW
|
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Ownership interest | 71.00% | |
| Distance of facility from Santiago | km | 400 | |
| Generating capacity | MW | 81 | |
| Cash consideration | $ 68.5 | |
| Impairment loss | $ 4.2 |