XML 102 R63.htm IDEA: XBRL DOCUMENT v3.20.1
Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Analysis of Accounts Receivable by Component (Detail)
$ in Thousands, $ in Millions
Dec. 31, 2019
MXN ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
MXN ($)
Disclosure of accounts receivable [line items]      
Contract assets $ 34,274,007   $ 34,718,749
Impairment of trade receivables (39,480,909)   (40,798,025)
Trade and other receivables 219,845,738   231,908,792
Non-current subscribers, distributors and contractual assets 15,139,442 $ 803 15,681,872
Total current subscribers, distributors and contractual assets 204,706,296 $ 10,863 216,226,920
Cost [member] | Receivable from subscribers and distributors [member]      
Disclosure of accounts receivable [line items]      
Trade and other receivables 184,260,099   173,053,226
Cost [member] | Telecommunications carriers for network interconnection and other services [member]      
Disclosure of accounts receivable [line items]      
Trade and other receivables 5,079,763   5,543,263
Cost [member] | Recoverable taxes [member]      
Disclosure of accounts receivable [line items]      
Trade and other receivables 23,628,728   46,706,298
Cost [member] | Sundry debtors [member]      
Disclosure of accounts receivable [line items]      
Trade and other receivables $ 12,084,050   $ 12,685,281