Financial investments, Restructuring agreement of Abengoa (Details) $ in Millions |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2019
USD ($)
mi
|
Jan. 29, 2019
USD ($)
|
|
| Befesa Agua Tenes, S.L.U. [Member] | ||
| Restructuring Agreement [Abstract] | ||
| Consideration payment advanced | $ 19.9 | |
| Ten West Link [Member] | ||
| Restructuring Agreement [Abstract] | ||
| Interest acquired | $ 12.5 | |
| Length of transmission lines | mi | 114 |