XML 104 R91.htm IDEA: XBRL DOCUMENT v3.19.1
Financial Risk Management - Summary of Ratio of the Shareholders' Equity to Total Liabilities (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
MXN ($)
Dec. 31, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Disclosure Of Financial Instruments [Abstract]      
Stockholders' equity -controlling interest $ 20,708,985 $ 21,028,215 $ 21,333,015
Total liabilities $ 17,778,352 $ 17,440,763 $ 13,646,893
Ratio of total stockholders' equity to liabilities 1.2 1.2 1.6