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Bank Loans and issuance of Debt Securities - Summary of Issuance of Debt Securities (Parenthetical) (Detail) - MXN ($)
$ in Thousands
12 Months Ended
Jun. 25, 2020
Feb. 13, 2020
Mar. 29, 2019
Nov. 09, 2017
Apr. 06, 2017
Jul. 08, 2016
Feb. 20, 2015
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jan. 29, 2016
Disclosure of debt securities [line items]                      
Issuance of debt securities               $ 17,000,000 $ 12,000,000 $ 9,000,000  
Derivative financial instrument basis points   17.00%                  
Unsecured Debt GAP-15 [Member] | TIIE Rate Plus 24 Basis Point [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities             $ 1,100,000   $ 2,200,000 2,200,000 $ 1,100,000
Borrowings interest rate basis               28-day TIIE plus 24 basis points      
Derivative financial instrument basis points             24.00%       24.00%
Maturity period             5 years        
Maturity date             Feb. 14, 2020        
Interest rate of debt                 4.4882%    
Unsecured Debt GAP-15-2 [Member] | Fixed Rate Interest [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities             $ 1,500,000 $ 1,500,000 $ 1,500,000 1,500,000  
Maturity period             10 years        
Maturity date             Feb. 07, 2025        
Interest rate of debt             7.08%        
Unsecured Debt GAP-16 [Member] | TIIE Rate Plus 49 Basis Point [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities           $ 1,500,000   $ 1,500,000 $ 1,500,000 1,500,000  
Borrowings interest rate basis               28-day TIIE plus 49 basis points      
Derivative financial instrument basis points           49.00%          
Maturity period           5 years          
Interest rate of debt                 4.4882%    
Unsecured Debt GAP-17 [Member] | TIIE Rate Plus 49 Basis Point [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities         $ 1,500,000     $ 1,500,000 $ 1,500,000 1,500,000  
Borrowings interest rate basis         28-day TIIE plus 49 basis points            
Derivative financial instrument basis points         49.00%       4.4882%    
Maturity period         5 years            
Unsecured Debt GAP-17-2 [Member] | TIIE Rate Plus 44 Basis Point [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities       $ 2,300,000       2,300,000 $ 2,300,000 $ 2,300,000  
Borrowings interest rate basis       28-day TIIE plus 44 basis points              
Derivative financial instrument basis points       44.00%         4.4882%    
Maturity period       5 years              
Unsecured Debt GAP-19 [Member] | TIIE Rate Plus 44 Basis Point [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities     $ 3,000,000         $ 3,000,000 $ 3,000,000    
Borrowings interest rate basis     28-day TIIE plus 44 basis points                
Derivative financial instrument basis points     44.00%           4.4882%    
Maturity period     5 years                
Unsecured Debt GAP 20 [Member] | TIIE Rate Plus 17 Basis Point [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities   $ 3,000,000                  
Borrowings interest rate basis   28-day TIIE plus 17 basis points                  
Derivative financial instrument basis points   17.00%           4.4882%      
Maturity period   5 years                  
Unsecured Debt GAP-20-2 [Member] | TIIE Plus 85 Basis Points [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities $ 602,000             $ 602,000      
Borrowings interest rate basis 28-day TIIE plus 85 basis points                    
Derivative financial instrument basis points 85.00%             4.4882%      
Maturity period 3 years                    
Unsecured Debt GAP-20-3 [Member] | Fixed Rate Interest [Member]                      
Disclosure of debt securities [line items]                      
Issuance of debt securities $ 3,598,000             $ 3,598,000      
Maturity period 7 years                    
Interest rate of debt 8.14%