v3.19.1

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 |

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