XML 185 R104.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Contingent Liabilities (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of contingent liabilities [abstract]    
Beginning balance $ 50,766,070 $ 34,611,091
Business combination 115,971 30,333
Effect of translation (648,685) 15,397,279
Increase of the year 10,510,473 12,199,311
Applications payments (7,618,520) (8,959,551)
Applications reversals (2,046,178) (2,512,393)
Ending balance $ 51,079,131 $ 50,766,070