XML 68 R55.htm IDEA: XBRL DOCUMENT v3.21.1
Cash and cash equivalents and other investments (Schedule of Cash and cash equivalents) (Details) - MXN ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash and cash equivalents [abstract]        
Cash $ 6,971,175 $ 898,394    
Cash equivalents [1] 756,523 6,548,053    
Total cash and cash equivalents $ 7,727,698 $ 7,446,447 $ 6,987,241 $ 7,203,604
[1] Cash equivalents are investments with initial original maturities of less than 90 days and consist primarily of Treasury Bills issued by the United States Treasury Department.