XML 160 R145.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Instruments - Disclosure of Outstanding Cross Currency Swap Agreements (Detail) - Cross-currency swaps [member] - MXN ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Less than 1 year [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount $ 24,760 $ 2,707
Fair Value Liability (3,878) (10)
Fair Value Asset   1,165
1-2 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 6,263 39,262
Fair Value Liability (205) (4,837)
Fair Value Asset   3,688
2-3 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 18,428 7,022
Fair Value Liability (927) (265)
Fair Value Asset 567  
3-4 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 4,853 19,474
Fair Value Liability (12) (842)
Fair Value Asset 24 798
5-6 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 14,446  
Fair Value Asset 8,336  
8-9 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 888  
Fair Value Liability (192)  
9-10 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 6,907 925
Fair Value Liability   (131)
Fair Value Asset $ 51  
4-5 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount   5,076
Fair Value Liability   (128)
Fair Value Asset   28
6-7 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount   12,670
Fair Value Asset   9,057
10-11 years [member]    
Disclosure of detailed information about financial instruments [line items]    
Notional amount   5,476
Fair Value Asset   $ 125