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Income tax incurred and deferred: Temporary differences (Details) - MXN ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income tax:      
Net deferred tax assets $ 260,202 $ 257,512  
Deferred tax liability (asset) 3,165,145 3,004,584 $ 3,081,668
Later than one year      
Income tax:      
Deferred tax liabilities 3,425,347 3,262,096  
Temporary differences      
Income tax:      
Net deferred tax assets 31,019 48,079  
Fair Value of Long term Debt      
Income tax:      
Net deferred tax assets 162,574 175,137  
Allowance for doubtful accounts      
Income tax:      
Net deferred tax assets 66,609 34,296  
Deferred tax liability (asset) (66,609) (34,296) $ (36,874)
Fixed and intangible assets      
Income tax:      
Deferred tax liabilities 3,198,632 2,974,108  
Temporary assets      
Income tax:      
Deferred tax liabilities 226,106 287,172  
Amortization of expenses      
Income tax:      
Deferred tax liabilities 609 816  
Colombia (Airplan) | Fixed and intangible assets      
Income tax:      
Deferred tax liabilities 647,571 695,212  
Puerto Rico (Aerostar) | Fixed and intangible assets      
Income tax:      
Deferred tax liabilities $ 1,032,799 $ 942,519