v3.10.0.1

Financial information by segment, Revenues and Further Adjusted EBITDA (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) Customer	Jun. 30, 2017 USD ($) Customer
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	4	4
Revenue	$ 513,113	$ 483,215
Further Adjusted EBITDA	$ 439,356	$ 389,727
Renewable Energy [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	3	3
Revenue	$ 392,213	$ 363,603
Further Adjusted EBITDA	$ 345,386	$ 279,263
Efficient Natural Gas [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues | Customer	1	1
Revenue	$ 61,437	$ 59,414
Further Adjusted EBITDA	46,982	52,842
Electric Transmission Lines [Member]
Financial information by segment [Abstract]
Revenue	47,903	47,617
Further Adjusted EBITDA	40,300	49,832
Water [Member]
Financial information by segment [Abstract]
Revenue	11,560	12,581
Further Adjusted EBITDA	6,688	7,790
North America [Member]
Financial information by segment [Abstract]
Revenue	172,315	170,457
Further Adjusted EBITDA	154,659	151,786
South America [Member]
Financial information by segment [Abstract]
Revenue	59,881	58,688
Further Adjusted EBITDA	49,247	58,615
EMEA [Member]
Financial information by segment [Abstract]
Revenue	280,917	254,070
Further Adjusted EBITDA	$ 235,450	$ 179,326

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- Definition

Further adjusted earnings before interest, taxes, depreciation and amortization (EBITDA) is calculated as profit/(loss) for the period attributable to the parent company, after adding back loss/(profit) attributable to non-controlling interests from continued operations, income tax, share of profit/(loss) of associates carried under the equity method, finance expense net, depreciation, amortization and impairment charges of entities included in the consolidated financial statements, and dividends received from the preferred equity investment in Abengoa Concessoes Brasil Holding S.A (ACBH).

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