Contracted concessional assets (Tables)

6 Months Ended

Jun. 30, 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 June 30, 2018 and December 31, 2017 is as follows:

	Balance as of June 30,			Balance as of December 31,
	2018			2017
	($ in thousands)
Contracted concessional assets cost		10,467,669			10,633,769
Amortization and impairment		(1,731,301	)		(1,549,499	)
Total		8,736,368			9,084,270