Contracted concessional assets (Tables)

3 Months Ended

Mar. 31, 2018

Contracted concessional assets [Abstract]

Movements of contracted concessional assets

The detail of contracted concessional assets included in the heading ‘Contracted concessional assets’ as of March 31, 2018 and December 31, 2017 is as follows:

	Balance as of March 31,			Balance as of December 31,
	2018			2017
	($ in thousands)
Contracted concessional assets cost		10,751,202			10,633,769
Amortization and impairment		(1,650,654	)		(1,549,499	)
Total		9,100,548			9,084,270