v3.10.0.1
Significant accounting policies (Tables)
 12 Months Ended
Dec. 31, 2018
Significant accounting policies [Abstract]  
Summary of adjustments arising from application of IFRS 9 and IFRS 16
Summary of adjustments arising from application of IFRS 9 and IFRS 16 as of December 31, 2017

     
IFRS 9 Adjustments
       
($ in thousands)
 
As
reported
  
Expected
credit
losses (*)
  
Modification
of financial
liabilities
  
Hedge
accounting
  
IFRS 16
Adjustments
  
Restated at
January
1, 2018
 
Contracted concessional assets
  
9,084,270
   
(53,048
)
  -
   -
   
62,982
   
9,094,204
 
Deferred tax assets
  
165,136
   
14,866
   
(3,055
)
  -
   -
   
176,947
 
                         
Long- term project debt
  
5,228,917
   -
   
(39,599
)
  -
   -
   
5,189,318
 
Grants and other liabilities
  
1,636,060
   -
   -
   -
   
62,982
   
1,699,042
 
Deferred tax liabilities
  
186,583
   -
   
8,849
   -
   -
   
195,432
 
                         
Other Reserves
  
80,968
   -
   -
   
1,326
   -
   
82,294
 
Retained Earnings
  
(477,214
)
  
(38,182
)
  
27,695
   
(1,326
)
  -
   
(489,027
)

(*) The expected credit losses provision only applies to the contracted concessional assets recorded as financial assets for an amount before provision of $936,004 thousand as of December 31, 2017 (see Note 6).
Discount rates and growth rates used to calculated recoverable amount for CGUs by segment
Accordingly, the following table provides a summary of the discount rates used (WACC) and growth rates to calculate the recoverable amount for CGUs with the operating segment to which it pertains:

Operating segment
 
Discount rate
  
Growth rate
 
EMEA
  
4% - 6
%
  
0
%
North America
  
5% - 6
%
  
0
%
South America
  
5% - 7
%
  
0
%