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

The total span, length or measured distance of transmission lines.

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- References

No definition available.

+ Details

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- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph B64
-Subparagraph f
-Clause i
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-URIDate 2018-03-16

+ Details

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- Definition

The fair value, at the acquisition date, of equity interests of the acquirer transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2018-01-01
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-URIDate 2018-03-16

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- Details

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- Details

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