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Intangible Assets, Net and Goodwill - Additional Information (Detail)
€ in Thousands, S/ in Thousands, R$ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, in Thousands
 1 Months Ended 12 Months Ended
Jul. 14, 2017
MXN ($)
Feb. 24, 2017
MXN ($)
May 26, 2016
MXN ($)
May 26, 2016
PEN (S/)
Jan. 31, 2017
MXV ( )
Jul. 31, 2016
MXN ($)
Jul. 31, 2016
USD ($)
May 30, 2016
MXN ($)
May 30, 2016
EUR (€)
Feb. 28, 2016
MXN ($)
Nov. 30, 2015
MXN ($)
Nov. 30, 2015
EUR (€)
Oct. 31, 2015
MXN ($)
May 31, 2015
MXN ($)
Dec. 31, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Dec. 31, 2015
MXN ($)
Dec. 31, 2015
BRL (R$)
Dec. 31, 2015
ARS ($)
Feb. 28, 2016
USD ($)
Disclosure of intangible assets and goodwill [line items]                                        
Amortization of intangibles                             $ 24,348,182 $ 19,522,968 $ 15,000,875      
Renewal of license [member] | 700 MHz frequency band [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license |         3,592,034                              
Vip mobile serbian subsidiary [member] | 800 MHz spectrum [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                     $ 1,129,988 € 60,942                
2015 acquisition [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
License fee recognized                             $ 448,364          
License estimated remaining useful life                             10 years          
Telekom Austria [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license               $ 410,713 € 18,837                      
Radiomovil dipsa [member] | Renewal of license [member] | 800 MHz frequency band [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                         $ 1,007,410              
Frequency band expiration year                         2030              
Radiomovil dipsa [member] | Renewal of license [member] | Eight point four Mega Hertz frequency band [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license   $ 917,431                                    
Radiomovil dipsa [member] | Renewal of license [member] | Two point five Giga Hertz frequency band [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license $ 5,305,498                                      
Claro Equador [member] | 4G license [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                           $ 2,861,060            
Frequency band expiration year                           2023            
IGP-ID [member] | Renewal of license [member] | 700 MHz frequency band [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                                 4,412,730 R$ 1,001,414    
Vipnet Croatia [member] | New MHz frequency [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license | €                       € 18,513                
Vipnet Croatia [member] | Existing MHz frequency [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                     $ 321,915                  
Paraguay subsidiary [member] | 30 Mhz spectrum [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Total consideration                   $ 830,719                   $ 46,000
Radiomovil Dipsa S A de C V (Telcel) [member] | Acquired through auction [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                   $ 2,098,060                    
Mtel Bulgaria [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license               $ 135,441 € 6,212                      
Peru subsidiary [member] | Spectrum in public auction [member] | 700 MHz frequency band [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license     $ 5,627,316 S/ 1,002,523                                
Frequency band expiration year     Dec. 31, 2036 Dec. 31, 2036                                
Argentina [member] | 4G license [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                                 5,599,745   $ 3,269,312  
Puerto Rico, Panama and other countries [member] | Other licenses [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                                 $ 4,174,614      
Ecuador [member] | Ecuador Telecom, S.A. [member] | License to operate TV [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license           $ 27,700 $ 1,500                          
Chile Europe uruguay and other countries [member] | Other licenses [member]                                        
Disclosure of intangible assets and goodwill [line items]                                        
Amount paid for license                             $ 2,532,088