XML 70 R75.htm IDEA: XBRL DOCUMENT v3.20.1
Financial instruments and risk management - Interest rate risk (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
MXN ($)
item
Dec. 31, 2018
MXN ($)
Dec. 31, 2017
MXN ($)
Interest rate risk      
Derivative financial liabilities   $ 122,948  
Loss on cash flow hedges $ 67,629 (455,009) $ 52,097
Interest rate swap contracts      
Interest rate risk      
Derivative financial liabilities $ 2,695 $ 0 0
Loss on cash flow hedges     $ 13,827
28-day TIIE      
Interest rate risk      
Spread on interest rate basis 1.20%    
Number of caplets | item 59    
28-day TIIE | Maximum      
Interest rate risk      
Spread on interest rate basis 10.00%