v3.19.3
Contracted concessional assets (Tables)
 9 Months Ended
Sep. 30, 2019
Contracted concessional assets [Abstract]  
Movements of contracted concessional assets
The detail of contracted concessional assets included in the heading ‘Contracted concessional assets’ as of September 30, 2019 and December 31, 2018 is as follows:

  
Balance as of
September 30,
2019
  
Balance as of
December 31,
2018
 
  
($ in thousands)
 
Contracted concessional assets cost
  
10,214,848
   
10,475,828
 
Amortization and impairment
  
(2,111,508
)
  
(1,926,647
)
Total
  
8,103,340
   
8,549,181