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Critical Accounting Estimates and Judgements (Tables)
 12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Sensitivity Analysis Based on 10% Increase/Decrease in Assumptions of Gross Margin, Discount Rate, Terminal Growth Rate (Details)
At December 31, 2018, and 2019 the Group has performed a sensitivity analysis increasing or decreasing the assumptions of gross margin, discount rate, and revenue and terminal growth rate by a 10%, with all the other variables held constant, as follows:
 
   
Difference between recoverable amount and carrying amounts
 
   
2018
  
2019
 
Goodwill
     
Gross margin
  
 
(10
%) 
 
 
+10
% 
 
 
(10
%) 
 
 
+10
% 
Engineering and construction
   0.51%   41.12%   (25.54%)   (4.25%) 
Electromechanical
   (9.73%)   38.89%   35.63%   52.97% 
Discount rate:
  
 
(10
%) 
 
 
+10
% 
 
 
(10
%) 
 
 
+10
% 
Engineering and construction
   39.19%   6.65%   (4.30%)   (23.09%) 
Electromechanical
   29.36%   2.97%   48.89%   39.92% 
Terminal growth rate:
  
 
(10
%) 
 
 
+10
% 
 
 
(10
%) 
 
 
+10
% 
Engineering and construction
   18.48%   23.30%   (16.31%)   (13.38%) 
Electromechanical
   12.90%   16.34%   42.36%   46.32% 
Trademarks
     
Revenue growth rate:
  
 
(10
%) 
 
 
+10
% 
 
 
(10
%) 
 
 
+10
% 
Morelco
   75.00%   116.27%   22.14%   60.11% 
Vial y Vives - DSD
   27.40%   55.71%   110.69%   72.38% 
Discount rate:
  
 
(10
%) 
 
 
+10
% 
 
 
(10
%) 
 
 
+10
% 
Morelco
   126.00%   72.33%   63.02%   23.56% 
Vial y Vives - DSD
   29.54%   55.99%   78.72%   106.64% 
Terminal growth rate:
  
 
(10
%) 
 
 
+10
% 
 
 
(10
%) 
 
 
+10
% 
Morelco
   91.70%   99.82%   37.49%   44.02% 
Vial y Vives - DSD
   38.99%   44.26%   88.07%   95.20% 
Summary of Sensitivity Analysis Performed Considering a 10% Increase/Decrease in Group's Gross Margins
As of December 31, 2017, 2018 and 2019, a sensitivity analysis was performed considering a 10% increase/decrease in the Group’s gross margins, as follows:
 
   
2017
   
2018
   
2019
 
Revenues
   2,214,108    1,961,100    2,411,880 
Gross profit
   106,902    32,685    60,317 
%
   4.83    1.67    2.50 
Plus 10%
   5.31    1.84    2.75 
  
 
 
   
 
 
   
 
 
 
Increase in profit before income tax
   10,667    3,399    6,010 
  
 
 
   
 
 
   
 
 
 
   117,569    36,084    66,327 
  
 
 
   
 
 
   
 
 
 
Less 10%
   4.35    1.50    2.25 
  
 
 
   
 
 
   
 
 
 
Decrease in profit before income tax
   (10,667)    (3,399)    (6,010) 
  
 
 
   
 
 
   
 
 
 
   96,235    29,286    54,307