XML 130 R115.htm IDEA: XBRL DOCUMENT v3.8.0.1
Balances and Transactions in Foreign Currencies - Summary of Transactions in Foreign Currencies (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of Balances and Transactions in Foreign Currencies [Line Items]      
Revenues $ 1,909 $ 4,103 $ 1,911
Other Operating Revenues 1,679 1,431 473
Purchases of Raw Materials 16,407 15,065 11,712
Interest Expense 2,986 3,678 1,973
Consulting Fees 302 410 36
Asset Acquisitions 276 407 75
Other 4,072 3,348 2,276
U.S. dollars [member]      
Disclosure of Balances and Transactions in Foreign Currencies [Line Items]      
Revenues 1,909 4,068 1,891
Other Operating Revenues 1,677 1,281 472
Purchases of Raw Materials 16,320 14,961 11,710
Interest Expense 2,534 3,173 1,973
Consulting Fees 267 182 34
Asset Acquisitions 272 407 75
Other 4,052 3,339 2,035
Euro [member]      
Disclosure of Balances and Transactions in Foreign Currencies [Line Items]      
Revenues   6  
Other Operating Revenues 2   1
Purchases of Raw Materials 87 104 2
Interest Expense 452 355  
Consulting Fees 23 43 2
Asset Acquisitions 4    
Other 20 5 37
Other currencies [member]      
Disclosure of Balances and Transactions in Foreign Currencies [Line Items]      
Revenues   29 20
Other Operating Revenues   150  
Interest Expense   150  
Consulting Fees $ 12 185  
Other   $ 4 $ 204